What did you find so funny? As anyone familiar with history of this region knows, Baltic republics did voluntary join Soviet Union. Majority of population and political elites was for it. Minority was against. Some of those later emigrated, which does not change the fact that accession was voluntary and according to international law.
Of course, there was some level of Soviet interference before the events, at a level comparable to let us say US interference in recent Ukrainian elections. One may say Baltic revolutions of 1930s were first "velvet revolutions" or "revolutions of roses" in the World. However it hardly changes anything.
Likewise, if you do not recognize Baltic republics joining USSR, you should not recognize mentioned Ukrainian elections as well and even more so since in Baltic case pro-Soviet stance was much more prevailing (compared to 45% of electorate in Ukraine falsified up to 51%) and actually constituted definite and qualified majority.