Germans should try to perform the same concept as "Its okay to be white" presented to try and show that supporters of Merkel are retarded however I must admit I am not fully aware of the German situation and I don't know if the German left is as retarded as the American left.

Alternatively, you could just place posters up citing necessary information on why refugees are fucked up, If you do this I advise you have a source at the bottom for anybody who sees a picture of it that cites a good website, Not a website like "JEWISHCONSPIRACY.COM" but perhaps official government reports or UN reports.