It’s simple. The left hates everyone.
The basic explanation is that Leftists are scared s**tless of Islam, so they bag on Israel as a way to curry favor with the muslims (hoping the crocodile will eat them last).
It’s like Islam is a big bully standing there threatening Israel on the playground, while the Left stands behind Islam saying, “Yeah get him! I got your back! Yeah, we’re gonna mess him up!”
The Left only attacks easy targets that won’t fight back, because Leftists are cowards. That’s why they will mock Christianity relentlessly but are terrified to speak out against the abuse of women or any other negative aspect of Islam.
The Left knows that Christians are good people and won’t murder them in the street, but muslims are not so restrained - so the cowardly Lefties keep their lips buttoned when it comes to Islam!