This is the pamphlet I'm talking about:
The evil white race must be destroyed!
The white racist and their Heeb masters must be purged from the face of the earth!
The children of the white racists are the future of the white race. This is where we must begin and end!
With Trump in power it is far to late for conversion of the racist children.
Thus we are left with only one option...
To do what must be done!!
BUT take heart! After the purge we will live in a worker's paradise free from racism, sexism, homophobia, transphobia, and oppression!
I've seen it on this tweet.
Was a pamphlet like that one distributed by an Antifa group?
Here are some other links that make the claim: