i have to write an essay

It can be about anything, as long as it explains why its a social issue, i jump from topic to topic, sentence to sentence, it's so frustrating. 

i've rewritten it twice, once about rape and its lack of awareness, again about the goverments lack of punishment for the rapists, and now, after the recent events of charlies kirks death, about America's censorships and its impact it has on society. 

The reason for this is I had lost three friends about it. They had posted about his death, feeling sorry for him, their ability to sympathize for the guy, no one deserves to die like that, but that had been the only political thing  they've all posted about for the last two years since the genocides started, or trump being in office and all the other heavy things that weigh on the publics shoulders. and i, in all my red-haired glory asked that they unfollow me, as i would be doing the same. 

I had made a public post about it on my story after losing those three friends, and then had to argue with one because they can 'post what they like', trust i went on an eight minute rant explaining to them that they cannot only post about his death but not on their literal rights being taken away. like??  hello?? 

anyways, i think my inability to focus on one subject long enough to write a four page essay about one subject is giving me anxiety.  how can i possibly choose one subject when their is so much to pull from? 

How do i make a draft when i cannot even figure out the subject?