These are dancers and performers at the semi-finals of the local basketball league. Among their routines was one dressed with what appears similar to tzitzis. Religious fans got upset and offended and sent in complaints. The organizers claim they have done this show many times and nobody has complained before, it is normally so well received in Israel and in other places, but they will not perform it again during the upcoming finals.
source: Israel Hayom (with a couple more pictures)