The most potent example is when two people break a romantic relationship and they can't even look at one another let alone talk. You liked this person enough to say "we're dating" and that you want to know if you can or should spend the rest of your life with this person, and one conversation later you don't talk at all? I understand the hurt of feeling not good enough for them, or a future you've created for the two of you shattering, honestly I'm not saying these people are wrong, it just serves a great example of an injustice of society.
This is why it's hard to make friends for some people -including me. I decide within a few seconds what I think of any individual I meet, and I until today felt quite alright with my system. I take into account how they look, their body language in the short conversation we have, who is in our mutual social circle, and even the location we're in. I am systematic, it's cold and calculating. This method fits my personality but doesn't justify it. I along with so many others have a bipolar social disorder where people are either dear to my heart, or dead to me. The space between these two groups is as vast as you can think, and people plopped into my life lose traction and slip quickly into one of the camps.
Recently I've worked on this solely to make new friends. I've become something I egotistically consider better, which is neutral. It's a much friendlier system to just say hello to most people, and let them show who they are to you honestly before classifying them as friend or foe, and yet the problem here is they tend to stay there. If you merely act neutral and blank, they can't break through to be a friend. Society is a rigid construct and working new people into your life or even worse, working yourself into a new environment is becoming increasingly difficult. If you want a friend, be a friend.
Why? It's easier to do this. To either fully trust them as a close friend or not give them the time of day. Building friendships is a process taking time and energy.
We're all wrong when you really get to the essence of the problem. The solution I've found is that I am called to love people. You can love people by default or hate them by default, but our culture makes very little leeway in the middle. Hating everyone by default is a lonely road, and frankly I don't want to think so cynically, even though I'm quite capable of seeing people's flaws. Defaulting to love is recognizing your own flaws and agreeing as a society to not let them define you or anyone else.
Culturally love is usually romantic, a flaring ordeal of only two people. Use the word seldom and it becomes too intense, but using it on everything makes you a greeter at a superstore, where you say it until it loses meaning. Saying love all the time makes it scripted and people stop believing not only your love, but anything else you try to tell them. I am called to love but it's not the type of love that makes you trust them with everything, it doesn't mean you need their enemies to be your enemies, and it doesn't leave you cold and alone wishing you'd left well enough alone.
I'm called to love unconditionally.
The balance of using the concept of love without overusing it is tricky, and maybe you already glaze over the word reading it so often. I think at its core this type of love is treating everyone as well as you're able. Sacrifice here is critical. Sacrificing time, energy, and resources not with the thought of helping a thankless stranger, but being friendly to them, which can hopeful cause them to be a friend to you. I never think of kindness to strangers as kindness, but it is an invitation to a one on one relationship from me to this person.
Religiously, love is a commandment. John 13:34 says that I'll be known as a little Christ by my love. This is what invalidates certain people that call themselves Christians more than anything else. They cannot use that title while hating honosexuals, or Democrats, or Republicans, or the government, or Black people, or Muslims. The mindset here is at once simple and almost impossible to track with. If you're a Christian and honestly believe that God himself died for you and every other single person on the face of the planet past, present, and future, how can you say you don't love them? That implies you feel better than them here, because if you're both loved by the maker of literally every concept and place and thing, acknowledging that love in yourself and denying it in another is selfish.
Love isn't a word, it's a verb. Don't just be the person who says "I love this, I love that" but be thankful, and give some of this to people who aren't as well off. It's interesting the parallel of our own relationships and the idea of a deity reaching out to humanity. Both relationships are one reaching out to someone else, inviting them to a personal relationship not to take, but for both parties to give. Unconditional love isn't "Well you'd let me in your pants if you loved me" or "I love you because you got me everything on my wish list" or even "I love being around you because I feel like a better person". Giving is they key to making any healthy relationship. Ask not what that cutie/hunk in Algebra can do for you, see if you can do anything to make their day a bit brighter. Inviting them to you is so much easier than breaking into their world; it causes less damage and doesn't make as much pressure to love or hate someone.
Love is acting selflessly. It doesn't make you better at changing yourself to someone else's social standards, it makes you a person that others want to befriend.