Which other party that is still ruling today (aka dictatorship) mass murdered a bunch of students within the past 35 years? Or equivalent.

What counts and what not? I'm sure the US has killed a lot more who could be reasonably considered civilians, deliberately in the same time frame, even if they were not US citizens. Sure it was not the current admin, but one of the 2 major parties were in charge. If we only count the same people, pretty likely all the bigwigs who were responsible in China back then are no longer in power.