I have posted many times about whataboutism regarding liberals and conservatives (link). Jonathan Haidt's recent media blitz discussing his recent Atlantic article entitled, "Why the Past 10 Years of American Life Have Been Uniquing Stupid" is a good representative of this point of view. No reasonable person can deny the bad actions of some on the political left regarding the intolerance of free speech. However, it is unreasonable to compare the relatively small fringe on the left doing such with the massive movement by conservatives to end democracy in the USA.
This link will give one more insight into his blind spot.