[10] Bartkus ascribed his creative flexibility to growing up amid the “single-mindedness of a communist state,” which led him to prize the freedom offered by multiple perspectives.

Over ten years, MaLonNY has turned Marijampolė into a center for Lithuanian street art,[12][13] with contributions from international and Lithuanian artists such as Judy Tuwaletstiwa,[14] Žilvinas Kempinas,[15] Stasys Eidrigevičius,[16] Mike Estabrook,[17] The Bubble Process,[18] Lou Beach,[19] Ieva Martinaitytė-Mediodia,[20] Oleksandr Shatokhin,[21] Philip Grisewood,[22] Kacper Dolatowski,[23] and others.

One of his series, “Last Paintings,” engaged in a dialogue with the works of Pre-Raphaelite painters, attempting to produce a more contemporary art by returning to earlier artistic principles.

[30] Over the next three four years, his installations were featured at the United Nations building in New York City,[31] the International Peace Institute Salzburg Forum,[32] and Union Station in Washington, D.C.[33] One of Bartkus’ installations, titled “Gardens,” was commissioned by the Lithuanian Embassy to commemorate 100 years of Lithuania's independence.

He has made numerous public appearances wearing a “Holocaust Memorial, Lithuania” t-shirt to raise awareness for this issue.