Yes they get severely depressed now and then, they are not mentally fit. Some historical bouts of their depression include when Democrat Governor Fabus called in the Arkansas National Guard to prevent Black students from entering the school building to attend school. Then Republican President Eisenhauer Intervened to put a stop to it.
Another historical bout of the left’s depression was when Democrat Governor George Wallace stood on the steps of the school building to block Black students from entering the school. His personal Democrat motto of “Segregation then, segregation now, segregation forever” was doomed to fail. The Democrats soon instituted their programs to keep the Black folk down and dependent on the Dems. President Trump is fighting to do away with these programs that destroy the Black folks, and the Dems are fighting him tooth and nail.