@Daniel Bell Fair questions. And you're right -- the term Leftist can be misleading or ambiguous to some. In this case, "they" are the people that do the thing -- that is, use Islam as a tool for political gain by viewing Muslims as a marginalized group to be tethered together with other "marginalized" groups for political power. The people who do this thing are described as Leftists -- people who share an ideological view of the world. In this worldview, people are viewed not as individuals but according to group identity. To Leftists, the individual is incapable of acting as a sovereign being because the individual, in this worldview, experiences the world entirely through the lense of their group identity. When it comes to social and political matters or systems of government, truth or goodness cannot be sought for its own sake, but only for the benefit of one’s own group as individuals are constrained by their group identity. This postmodern worldview (i.e. this "attitude of skepticism") challenges the narrative used to uphold social, political and economic systems by suggesting that the system is only in place because it benefits certain groups. In other words, "they" (Leftists) might say, "you don’t support Western civilization because it is good, but only because it's good for you." This relativist worldview in which human beings are simply groups vying for power, blinded and driven by group identity, underlies today's progressive movement. It is propagated both wittingly and unwittingly, through support of progressive social and political ideology; by those who consciously embrace this worldview and those who are naive to it. Leftism can thus be promoted by people who not are truly "Leftists." Well intentioned liberals, unaware of this relativist ideology that masquerades as compassion, often side with their further left progressive counterparts and participate in the destruction of the West. A good indicator, I think, of a purebred Leftist is someone who has progressive values AND aggressively shuts down dialogue with opposition (because the worldview that underlies the Leftists' social and political views does not allow for good faith dialogue -- again, because it defines human beings according to group identity, which constrains one's ability to reason independently from one’s group identity and drives motives based on the interest of one’s identity group).