Turkey : Police arrest a number of silent protesters . Thousands of protesters attend ' Standing Man ' in Istanbul . The U.N. human rights commission expresses concern about police brutality . Prime Minister Erdogan announces rallies this day in the big cities .
NEW : Police arrest a number of silent protesters . Hundreds of protesters emulate 'Standing Man ' in Istanbul . The U.N. human rights commissioner expresses concern about police tactics . Prime Minister Erdogan announces rallies this weekend in three big cities .