True Left

I actually find this narrative somewhat plausible:

Weatherford explores Genghis Khan's legacy and influence; he attributes many aspects of the Renaissance, such as the spread of paper and printing, the compass, gunpowder and musical instruments such as the violin, to the influence of trade enabled by Genghis Khan and the Mongol Empire. Weatherford suggests that the European Renaissance was a rebirth, not of Greece or Rome, but of concepts from the Mongol Empire. He notes the following:

I merely happen to consider the Renaissance to be the worst event in all of history, therefore acknowledging Genghis Khan's role in it just makes him an even more evil villain in my mind.

The problem with False Leftists is that (being progressives) they think the Renaissance was a positive event to begin with.

True Leftists can work with anyone who hates the Renaissance, no matter whom they blame for it. True Leftists cannot work with anyone who likes the Renaissance, no matter whom they credit for it.