Is tehre any way that, given the promiennce of socialist leanings among American workers by 1919- both black & white- that they could've made common cause against govt forces, by- at least in the north- setting aside their own ethnic differences re job competition, housing etc- so that the likes of the DC, Chicago, Tulsa, Omaha, et al race riots didn't occur ? Could tehre have been instead mass social disturbances in the US at the time more along the lines of class conflict as opposed to race ?