Why was the "Antifa, explain this picture!" thread deleted?

The entire thread titled "Antifa, explain this image!" has been wiped out...

What exactly was the justification for deleting a discussion that was merely sitting "on the edge of political discourse"? Who exactly found this topic so offensive that it had to be scrubbed?

I am formally requesting that the administration restore the deleted thread—there is absolutely no legitimate reason for its removal in the first place...

Thank you...

I am still waiting for an explanation—and the restoration of my unfairly deleted thread...