nanakanda: Do you realise that the term "alt-right" came into existence to hide the blatantly white supremacist leanings of its adherents? "Far right" is another term that can be used to describe these groups.  On that basis, the term "alt-left" has no meaning.  There is no corollary on the left because left-wing groups don't generally espouse supremacy based on ethnic group.

I can only assume that you use it to describe groups that are far left, in your opinion.  How you can possibly accuse the G&M of being far left is beyond me.  You must have no idea of the meaning of the term or concept.