Modern identity leftism will eat itself...

[VIDEO] What does this video explain? Basically the left eats it's own. We hear often about how the Democrats represent the working class or the left (liberals or progressives) represent the working class or the poor and instead they seem to represent something else.

Often it seems what the left advocates for is only identity politics. We have to respect different identities and groups and if we don't then expect to be attacked and shamed. Some of what is discussed in this video is quite convoluted and impractical and yet some SJW activist out there will get lost in a sea of offensiveness and sensitivity.

Another thing to be concerned about who are today's left/liberal/progressive activist speaking for? Are they speaking for the working class? Who do they really represent?