How were returning african-american soldiers treated in american cities in 1919–1920?

they were treated very badly. they were targeted by white supremacists and other groups, like the klu klux klan, even after coming back to the country as veterans. they were seen as inferior and gave the african americans new found motivation to fight against this racial injustice. 

if you are talking about current time the answer is no

if you are talking about when the colonies were developing the answer is yes