[1] His most notable film roles include performances in Sekal Has to Die (1998), All My Loved Ones (1999), and Tiger Theory (2016), as well as the television series Sanitka (1984) and Neviditelní (2014).

In 1991, together with a number of colleagues, Bartoška transferred to the newly established Divadlo Bez zábradlí theatre.

During the Communist era in Czechoslovakia, Bartoška was a signatory of the 1977 Anticharter,[2] in opposition to the Charter 77 civic initiative co-written by dissident and playwright Václav Havel.

In 1989, in a seeming about-face, Bartoška signed Několik vět, a document put forward by Charter 77; he also joined a petition for Havel's release from prison.

[3] In 2016, responding to a number of statements made by president Miloš Zeman, as well as the Prohlášení čtyř document, which criticized the meeting between then-culture minister Daniel Herman and the Dalai Lama, Bartoška and Vojtěch Dyk incited the Czech public to civil unrest.