Boston police clash with protestors at pro-Palestinian rally and arrest 13 people

Police clashed with protesters in Boston at a Pro-Palestinian rally on Tuesday evening. 

Boston police say that four of their officers were injured in the attack. 

They charged 13 protestors, aged between 19 and 27, with disorderly conduct, resisting arrest and disturbing the peace.

The protestors are due to be arraigned on Wednesday and Thursday.