I am all for Leftists who open their eyes.
David Horowitz is one of the best examples of this. He was a hard-core Leftist, a lawyer for the Black Panthers back in the late Sixties-early Seventies.
He was mugged by reality when the Black Panthers brutally murdered a white secretary who was their bookkeeper, because they thought she “knew too much”.
That opened his eyes.
I guess you could compare then to smokers who had the fear of a spot on their lung put into them. Once they quit, they are sold on quitting.
They see the light!