The SPLC  is not a credible source and such claims of increased numbers of hate groups, as a result of Trumps election and rhetoric can not be proven. Actually, there is a direct correlation between the Obama presidency and the deterioration of race relations in America. Hate for whites increased among immigrants and other groups. 

As far civility and reasoned debate are concerned the Liberal dominated media and liberal politicians and their "field" representatives are the ones responsible for the degradation of political, expression, or expression itself, in America. Did you see the women's march after Trump's election. The same goes for the overall decline in civility. Trump has had nothing to do with these matters. In fact compared to the media demons and the hate filled politicians he has been dealing with, Trump has been the perfect gentlemen.