Jews should never allow something like this to happen at the Temple Mount where the Holy Temple stood. What a desecration to Hashem!
Given all the snowballs placed on the arms and ground, it appears to be a celebration of throwing rocks at Jews.

Especially repugnant given that terror-victim Adele Biton, critically injured from stones, died this week.

Two years ago they preferred snow-rockets.

http://elderofziyon.blogspot.com/2015/02/a-snowman-terrorist-on-temple-mount.html