Communism is not a "left-wing" political philosophy. Communism is on a whole different axis than the left-right split in contemporary politics.
The left-right split is about what kind of capitalism we want. The right wing wants an authoritarian, force-based, racist, national-imperialist capitalism; the left wing wants a more subtle, internationalist, "meritocratic" capitalism. Make no mistake: although they're both inside capitalism, the left-right split is very sharp and sometimes violent.
The focus of the left on identity politics and multiculturalism supports this thesis. The goal of quintessentially left-wing identity politics — for women, blacks, gays, immigrants, atheists, etc. — focuses on allowing individuals from these groups to enter the bourgeoisie. The goal of "multiculturalism" is to make the bourgeoisie an international class, to defend non-Western social and political ideas — such as the subjugation of women under Islam — that allow leaders of cultures outside the imperial nations to participate in the international bourgeoisie. The bourgeois left argument against colonialism is not that exploitation is bad, it's that foreign exploitation is bad.
It is a mistake, I think, to count left-wing bourgeois intellectuals as natural allies in the struggle for communism; calling communism a "left-wing" political philosophy makes this mistake seductive.