WARSAW, Poland -- An exhibition at a Polish state museum opening Friday features the works of provocative artists in what organizers describe as a celebration of free speech, and a challenge to political correctness and “cancel culture” on the political left.Some critics, however, accuse organizers of giving a platform to antisemitic, racist and Islamophobic messages under the pretense of defending freedom of expression."Political Art,” which features the works of nearly 30 artists, is the