How come no one remembers the millions of catholics killed by Nazis and put in camps in WW2?

In poland alone 2 million catholics were killed.Many catholics were also put in interment camps.It gets me very angry that people remember only jewish deaths but have a selective memory when it comes to other people who were persecuted and killed by Nazis (homosexuals).I know that fascism is a nonreligious somewhat "political religion" itself but jesus why this onslaught?!