I'm not sure that you're correct. In those examples you state, eventually the majority was on side. It seems that the majority is more often "live and let live"

I'm not sure that you're correct. In those examples you state, eventually the majority was on side. It seems that the majority is more often "live and let live" than a minority who seek power to suppress. There's also the issue of plurality: 50% + 1 might vote one way but they represent a plurality of views. Perhaps if we voted on every policy then it would be worse? Seems hard to justify.