 Complete the following phrase:  This led to numerous incidents throughout different parts of the city centre before the protest rally even started as the police tried, often brutally, to impede the stream of people heading to the square. Soon after, the battles started at the square itself as the police started using armoured vehicles, water cannons, and tear gas in an attempt to drive the protesters out of the square. Enraged protesters immediately began responding, some of them armed with sticks, traffic sign poles, crowbars or whatever else they could get their hands on. The crowd from the adjoining streets jeered the police, chanting angrily at them to 