Russians considered Frederic Chopin music to be "Polish guns hidden in flowers" (one of the Russian officials citation) so they had to ban it (on the Polish territory occupied by Russia, in Russia itself it was legal to play Chopin...).

That quote is from Robert Schumann, a German composer contemporary with Chopin. It was not a citation from any Russian officials, nor was Chopin banned in Poland by the Russians (it was banned during the German occupation for a while).