Messi said as a father he was saddened by images coming from the conflict between Israel and Palestine.
Ice Bucket Challenge adapted in solidarity with Gazans whose homes have been destroyed in conflict.
The British film-maker wants an ‘absolute boycott of all the cultural happenings supported by the Israeli state’.
Israel started construction on hundreds of housing units in the West Bank and Jerusalem since its assault on the Gaza Strip began in July.
Israel said it would call up 10,000 reservists as Palestinians vowed to avenge Israel’s killing of three Hamas commanders in Gaza this morning.
At least 38 Palestinians died on Thursday as Israeli planes bombarded Gaza for the second day in a row.