Hoover dam was a New Deal program. The water from the Colorado has been over promised and over diverted. Droughts happen naturally, even if climate alarmists think cow farts cause them.
That's what Marx thought too.
And slavery didn't end until we created technology that made it unnecessary.
Division and agitation over class, race, gender, any intersectional aspect of society, to create resentment and destabilize a society in order to attempt to bring about delusional Marxist ideals of a workers paradise always work out worse for minorities and workers than capitalism has.