The German antifa are pro-Israel and pro-US!
That is impossible, they hate US and Israel.
A small group around the newspaper bahamas is like Aussie said, but the rest are evil.They call themselves ant-Germans. I like a lot of their positions, but not all.
They also glorify the British bombings of their towns and cities during WW2.
How prevalent are they, do they make up just a small percentage of the anti-fascist movement or is there potential for them to become fairly sizeable?
They are only a few, but they write the most intelligent texts of all German leftists and have a greater influence on the public oppinion, as their number would be supposed.
I like some positions of them like:
They like Free Market economy,

They fight Antisemisism,

They are pro USA and pro Israel,

They are against Nazis,

They are against real Communists

They fight for the civil society

I dislike some positions:
They are mostly atheists,

They are calling themselves communists, but they defend free market economy and the civil society - This is a little bit

They are very arrogant and don't try to educate people of goodwill, but they poleax them [On this way, they never will become a mass mouvement

]
All in all they are ok, but they have some heavy mistakes