@luckytran Here in Germany, wearing masks at protests has been illegal since the 1980s - West Germany, that is, it has always been illegal in East Germany, but then again, protests were entirely illegal over there unless orchestrated by the SED (Sozialistische Einheitspartei,
Socialist Unified Party) government. For a while at the beginning of the pandemic, wearing medical masks at protests was tolerated by the police despite being illegal, but not anymore.