From Ben Shapiro at Townhall:
Why does the left seek to support radical Islam so ardently? Because the left believes that the quickest way to destroy Western civilization is no longer class warfare but multicultural warfare: Simply ally with groups that hate the prevailing system and work with them to take it down. Then, the left will build on the ashes of the old system. In this view, Dawkins is an opponent — how can the left recruit Muslims to fight the system if Dawkins is busy alienating them? They support the Palestinian terror regime — how can that colonialist outpost, Israel, be defeated without a little blood? They applaud Sarsour — she’s an ally, so she must be backed.
Alliance with nefarious forces calls your own morality into question. KPFA has a lot more to answer for than Dawkins. But the left will never have to answer such questions so long as it focuses in on its common enemy: a supposedly conservative establishment that must be fought with any tool at its disposal.More.
Reality check: As good an answer as any I have heard recently.
See also: Shapiro: Trump did not ruin media. They did it to themselves
Why do feminists make common cause with Islamists?