The Greatest Innovations of the Soviet Union

The illegal dissollution of the USSR was one of Humanity's greatest tragedies, and anyone who thinks the Russian Federation is an improvement needs to do some serious introspection.

What was so illegal? Possibly the millions of USSR citizens taking the first flight or ride out of the Soviet bloc when it became available. Very illegal for the proletariat I'm sure.
- The majority of Soviet citizens wished to retain Socialism, a fact that continued after the dissolution. The people fleeing newly established Capitalism was due to dissolved safety nets. 7 million people died due to "Shock Therapy."
- the coup where Yeltsin ordered the military to fire upon parliament with tanks and instituted a rule-by-decree system to dissolve the government
  https://en.m.wikipedia.org/wiki/1993_Russian_constitutional_crisis
  seems pretty illegal to me

Is this some contemporary soviet propaganda? I mean all the people who died for political reasons or because the state economy was mismanaged probably don't care much about these achievements.

(To borrow from Cowbee's comment a bit) Wealth inequality was far lower in the Soviet Union's socialist system than the Tsarist system before it, the capitalist system after it was overthrown (obviously), and than western capitalist countries in the same time period.
Source
Human Rights In The Soviet Union, Including Comparisons With The U.S.A. by Albert Szymanski
Blackshirts and Reds by Michael Parenti
- No wonder then that 90% of the Soviet population voted to stay in the Union, but of course that didn't stop its overthrow because capitalists had already taken it over by then.
  A poll in 2009
  
  As time passes though, the capitalist propaganda that kids in these places grow up with will probably start to outweigh the lived experiences of worsened living conditions after capitalists overthrew the USSR that their parents had. It's sad.
- Funny you focus on whatever this is and conveniently ignore the millions murdered by the state.
  I'm here because my family escaped that shit.
I’m sure homeless people and victims of the opioid crisis in the US also don’t care about US achievements in for example the olympics but people still talk about them.