The presumed reasoning:

Recommended action: Hide the flag!

The footage below is from last Saturday’s anti-Salafist rally in Hannover. Many thanks to Oz-Rita for the translation, and to Vlad Tepes for the subtitling:

Transcript:

00:00 … Down with the flag, please…

00:04 Flag down, please. We do not want to provoke anyone.

00:08 What kind of country is this where the German flag

00:12 provokes? Are we in a foreign country here?

00:16 That’s insane; did you hear “down with the flag”?

00:20 Preferably hide (the flag) under your coat

00:24 like Mrs. Merkel. Yes, exactly: away with the flag.

00:28 We don’t seem to be in Germany any longer.

00:32 Those who feel “provoked” by the German flag

00:36 should leave Germany as soon as possible.