You can read all about the disrespectful teenagers who are breakdancing at the memorial to the Lithuanian Jews who were killed by the Nazis during World War II:
I wrote about the Lithuanian Jews on this previous blog post: https://furtherglory.wordpress.com/2011/04/18/the-killing-of-the-jews-in-lithuania/
and on this previous blog post: https://furtherglory.wordpress.com/2015/06/21/memorial-to-lithuanian-jews-coming-down/
The following quote is from the news article:
Tasteless tourists who post pictures of themselves breakdancing, doing handstands and even performing ballet at a holocaust memorial site where 10,000 Lithuanian Jews were murdered by the Nazis in one day are being shamed online.
The shocking images were taken in front of the mass murder memorial at Ninth Fort in Kaunas, where 9,200 children and their parents were slaughtered on October 29, 1941.
They show tourists grinning happily alongside hashtags such as #happy – apparently oblivious to the gravity of the massacre that took place behind them.