I cannot take this anymore

I teach 7-8th grade Pre-Algebra and Algebra 1 in Florida. Today I had huge mental breakdown after this stunt.

A student in my class which I have only about 8 kids in is the worst. Head of the serpent for behavior.

I am one of 2 white teachers in a 90% enrolled black school, so I’m receiving all kinds of racial comments I roll my eyes too

Today I start out with “let’s all goto page 243 where we start basic polynomial”

And this kid, literally screams: “I’ll be a good ni**er” and do it for master” and the entire class plunges into chaos

I send in behavior support they take him, 15min later he walks right back in with a bag a chips, maybe he’s cooler down I don’t know.

Then, he comes up to me says if “if you ever embarrass me like that I’ll smack the fuck out you”

Being in behavior support AGAIN, I write a referral, I get called down to the office on my TA period and essentially told I’m writing “too many referrals” and I need to mentor students who act this way

I’m sorry but what the fuck. I love teaching, I blew my major on secondary education now I’m stuck here what else am I going to do,

I try everything, getting personal with students, giving them my experience in the Army and school and try to help them find motivation but nothing works, there is no support system, half of our school is perm-substitutes I don’t know what to do.