G20 Toronto: Ontario Public Works Protection Act, Regulation 233/10

In case you need details about this law/regulation:

URGENT: Warning about increased police powers near the security zone | Toronto Media Co-op

http://www.e-laws.gov.on.ca/html/source/regs/english/2010/elaws_src_regs_r10233_e.htm

http://www.canlii.org/en/on/laws/stat/rso-1990-c-p55/latest/rso-1990-c-p55.html