Milestone payments . Half up front then pay in milestones , final amount isn ' t given until everything is satisfactory . What he ' s doing is pretty simple here as the browser already tracks scrolling which is why we have customers animations etc that trigger only when you get to part of a page . <| sep |> Citations are given , with pages . Also , I ' m rather jaded to violence , so atrocites during a revolution don ' t exactly change my opinions on politics . Every single society in the world has been founded on violence . Everyone is capable of being a monster during a war . If you abandoned every single ideology someone has done something heinous over , there wouldn ' t be any left . My only hope with a society is that we build a world where the only routine violence of our society exists in suppressing unprovoked violence . It ' s also flawed to characterize communism as having had dozens of tries The USSR was so dominant over the eastern bloc and their more distant allies that there ' s little point in drawing distinctions between their ideologies and governmental policy . Albania and China split with the USSR , yes , but their structure and ideology made few changes , other than Mao ' s antirevisionist line leading to the Cultural Revolution which is another conversation entirely and Hoxha building a fucking shitton of bunkers .