As a student of the Lviv State Medical Institute Khmara was involved in the underground Samizdat-movement that published Soviet Union's banned literature.

[1] As member of the People's Movement of Ukraine, the Ukrainian Conservative Republican Party, and Batkivshchyna, Khmara served in (Ukraine's national parliament) Verkhovna Rada from 1990 to 1998[2][3] and again from 2002 to 2006.

[4] In the 2006 Ukrainian parliamentary election he failed to return to parliament since he stood for the party Ukrainian National Bloc of Kostenko and Plyushch that did not win seats.

[1][5] In 2004 Khmara was one of the faces of the Orange Revolution that supported Viktor Yushchenko.

[6] On 25 February 2024 Khmara's public funeral procesion was held on Kyiv's main square Maidan Nezalezhnosti.