People or groups whose primary religious descriptor is "Christian" are likely to hurt you, judge you, treat you badly. Generic "Christian" in the US has become a word primarily used by a particular brand of evangelical fundamentalist. "Christian" means "homophobic megachurch member." Especially if it's given as a major part of a person's or group's identity.
There are Christians and Christian groups who aren't like that. You'll typically find them calling themselves Episcopalian, or Anglican, or Catholic (the Catholic Church is a horrible homophobic organization, but American Catholics themselves have a long tradition of tolerance and liberalism from their predominantly Irish, Italian, and Hispanic Roots), or Lutheran, or Quaker/Friends, or otherwise identifying themselves by their denomination. They're as Christian as the others (by some standards more so - the tolerant denominations tend to put more emphasis on the words of Jesus and the Gospels, and less on Leviticus and Paul). And when you say you hate Christians, they'll often take it to mean you hate them, and they'll be hurt. But they (by and large) aren't hateful people.
I grew up in an Anglican/Episcopalian church, and while I'm an atheist and always have been (I was born this way as surely as I was born trans and gay) I still love the church and the people in it. My priest was gay, and it was from him, and from the congregation's unconditional love and acceptance of him and his partner (now husband) that I learned to start to accept myself. And even now when I'm down and lonely I know I can go to an Episcopal church and be loved and welcomed and fed. I don't believe in what they believe in...hell, something like 30% of church membership is some variant of atheist/agnostic...but I believe they're good and decent people. And they're Christian.
But Christian clubs, associations, bible study groups, megachurches...even if they start out ecumenical and tolerant, they're quickly hijacked by the right-wing misogynistic homophobes, because they're loud and obnoxious and intolerant and utterly convinced of their moral superiority. Just stay away from them.