Why are transgender people more likely to commit suicide?

[TaraJo]

Transphobia is the biggest factor and no comparing them to blacks is stupid as it's not THE SAME kind of mistreatment

Absolutely!  Two very distinct differences here that I can think of right off the top of my head:

1)  If you're black or hispanic or Jewish or a member of another racial or ethnic minority, at least your family are all going to be in the same boat as you.  It's not like the family of black people is going to reject them for being black; they're black too.  LGBT people, especially trans people, don't get that luxury.  A lot of us have very homophobic/transphobic families.  It's not at all uncommon for homeless teens to be mostly gay or transgender, simply because their parents threw them out.  

2)  If you're transgender, the discomfort you get just from your body being wrong.... that's a kind of discomfort that can't directly be relieved by social acceptance.  Even if the rest of the world accepts me 100% as a woman, that doesn't change the feeling of discomfort I get from having to shave my face or from having to special order giant size women's shoes.  If there were some kind of racial dysphoria, where it just feels absolutely wrong for such-and-such person to be such-and-such race, well, we can compare the two then, but I haven't seen it yet.