Public protesting and demonstrations began one week ahead of the 2010 G20 Toronto summit, which took place in Toronto, Ontario, Canada on 26−27 June. The protests were for various causes, including poverty and anti-capitalism.
Protests mainly consisted of peaceful demonstrations and rallies but also took the form of a riot as a group of protesters using black bloc tactics caused vandalism to several businesses in Downtown Toronto. More than 20,000 police, military, and security personnel were involved in policing the protests, which at its largest numbered 10,000 protesters. While there were no deaths, 97 officers and 39 arrestees were injured, and at least 40 shops were vandalised, constituting at least C$750,000 worth of damage.