I am a liberal with zero tolerance for Islam. Having studied this pseudo-religion for three decades, I can say with certainty that there is nothing positive or spiritual about it. Islam has no redeeming characteristics. It is simply a totalitarian, imperialistic ideology with a thin veneer of religion to dupe the ignorant and lull the complacent. I pity Muslims for having been brainwashed, but that doesn't mean that I think Islam should be tolerated in liberal democracies. It is completely incompatible with Universal human rights.
There's no reason why the percentage of liberals (at the moment, 51 percent) who understand the problem of Islam couldn't be as large as conservatives (82 percent) or even larger. If that seems hard to imagine, check this out: Liberals Can Remain Liberals and Still Recognize Islam as a Threat.
Liberals and conservatives may disagree on many things, but against Islamization, we can and should stand united.