You know, I haven't seen all that many snowflakes on this forum--and I've certainly seen a lot of racist comments aimed against many nationalities/races/whatever.  And yes, it is allowed. 

I am no left-wing SJW by any means, but in my time on bitcointalk I've actually come to like interacting with people from all over the world--as long as they're not shitposting.  And yes, I am guilty of some harsh words against Filipinos in the past but I truly have no grudge against them.  Everything I wrote was just angry, emotional ranting against people who were polluting the forum with nonsense. 

On the other hand, sometimes I think getting it all out on the table when you've got a beef with someone can be a healthy thing, because at least you're being honest.  And usually the problem is never due to race, but behavior.