I don’t think it’s just a matter of age. Plenty of old people don’t support genocide or fascism.
And Obama isn’t a point in favor of that, because he also kept arming Israel, exercising PATRIOT Act powers, kept up all the U.S.'s wars as long as possible, and killing people by the thousands with drone strikes.
We have a problem with authoritarianism. Call it like it is. The 30-50 year old representatives support it, the 70 year old representatives support it.