The hubris of the Leftists look at Islam such that appears to be so very similar to their beliefs. In the Left's reasoning, Islam's differences in beliefs and mode of operation can be overlooked or ignored. If the Left arranges the victory of Islam over the West, the Left thinks they will be in charge. They do NOT understand that Islam has no place for them in its new caliphate. The Left are the first to be purged; killed, converted (and Dhimmis of the mullahs), or enslaved. It IS that simple, but the arrogant and stupid Left cannot see this at all.
Not always. Plenty of leftist mover and shakers will be addressed by new Muslim names, and they will even gain promotions.