In Kazakhstan, local residents made a person cover a Z symbol on his car with paint. He tried to justify himself that his last name, Zinovyev, starts with a Z, and apologized for his actions.
"Z" is a military symbol that the Russian military has been painting on vehicles in Ukraine. It's become a pro-war symbol for Russia's invasion of Ukraine.
I'm not sure that analogy really holds. The iron cross had been part of German military iconography since before Germany was even a united country, whereas this Z thing appears to have popped up specifically for the current Russian invasion
Upvote for a sincere question. Here's the wiki article on its use as a fascistic pro-war symbol. Kazakhs are unhappy with it because they too are a country that Russia makes territorial claims against and are thus largely opposed to the war and its symbols.