I Had a Bad Day

So I love my job, but there's this hierarchy thing going on and I'm right at the bottom. I plan to work my way up and I understand that being at the bottom means people will walk all over me, take advantage of me, abuse me and humiliate me. I'm also being paid half of minimum wage because I'm a trainee. But that's okay because once I work my way up there's no way I'll treat people the way I was treated, it's life experience I'm learning from.
But today it really got to me, even cried on my way home after the way I was treated.
Maybe it's just hormones.
I'm just one of those world peace types, I'm all about equality and diversity and I fail to understand people who violate it, whether it be racism, sexism, xenophobia, homophobia, trans-phobia, etc... I'll never understand people who cannot accept another good person for being who they are.
I daydream a lot, I guess that's to blame for why I'm so sensitive to the real world, because it's so harsh.
I just had a bad day, I'll be more optimistic tomorrow :)