"Main minority groups include Poles 234,989 (6.7%), Russians 219,789 (6.3%), Belarusians 42,866 (1.2%), Ukrainians 22,488 (0.7%) and Jews 4,007 (2001 census data)."

(https://minorityrights.org/country/lithuania/)

So, how did you figure out from the photos that those people are not among Lithuanian minorities?