water sprinkling and water game by Iranian young and they get arrested for!!!

I have not been writing for a while as I am busy with many work related events in my life.
I just read and saw some of the photos of young boys and girls in Tehran, Iran who gather in one of the Tehran Parks to use water guns and water bottle to sprinkle and wet one another! Just an enjoyment event for young people. What happened next??! Iran moral police have arrested many young people for jeopardizing rule of law and Islamic moral code!!!!
I am quite sad:(((
more can be read here, in Persian
I feel sad to see in 21 century there are government that are suppressing young based on unfounded rules!
Sad