The only thing that is necessary for evil to triumph is for good people to do nothing.  I am sure that were lots of normal people who voted for the National Socialists in Germany in the 1930s.  But that doesn't mean that Trump's victory has normalized some very evil people called the "alt-right."  Normal people who voted for Trump need to be confronted with this reality and understand what their vote really did.  They don't get to try to ignore the reality of their vote or justify it.  They don't really get to justify any racial hatred they helped to unleash.