A tenured professor at a Pennsylvania university who previously questioned the Holocaust and called for Israel's destruction is now making incendiary remarks about Jews, women and gays.

Kaukab Siddique is an English professor at Lincoln University, a historically black college outside Philadelphia. He asked on Facebook this month whether Bill Cosby's accusers took so long to come forward because "many women are sluts."

Another recent post attributed the Supreme Court's same-sex marriage decision to "Obama's homo uprising." A third post referred to "dirty Jewish Zionist White Supremacist thugs."

Lincoln University condemned the remarks, saying in a statement they are "an insult." But the university does not plan to take action, saying Siddique is entitled to express his opinions as long as he does not present them "as the views of the university."