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."