Nazism is still alive. About a week ago, a 31-year-old man hurled anti-Semitic slurs and offered the Nazi salute while crying "Heil Hitler" before passengers preparing to board a plane at an airport in Seattle.
Unless the United States finds a way to reverse the trend of racism and hatred and mend the deep splits in their society, these will only get worse. After all, Nazism grew in Germany and Europe in the 1930s because people were not stopped from targeting a specific race, while propagating the theory of Aryan superiority, and molding ordinary people's minds in such a manner that they stopped seeing others as equals. In Nazi Germany they even protected animals, but not people who did not belong to the Aryan race.
That is somewhat similar to what is happening in US society today. Society means companionship or fellowship, but in the current US society, different groups of people do not see each other as companions. Democrats and Republicans label each other as "lamebrains", Anglo-Saxon whites think they own the country and should rule over the others, and the sense of excluding immigrants is popular among some "natives" whose ancestors actually snatched the continent from the indigenous people there.
Social media often serves as a platform for different groups to make hate speeches rather than to talk with each other, because it is easy for hatemongers to bypass social media rules and amplify the hatred in society. It is time the US fixed the splits in society so that the Seattle case remains an isolated one, and not one to be followed by more such hate incidents.