Because of the insane level of security around the G20:
Banks, Schools, Provincial parliament, Tourist sites are all shuttering up. As well as several other businesses, functions and other places people visit. Toronto is not worth going to.
Which means the only people showing up in downtown TO are the G20 invitees and the protesters.
Makes rounding up the trouble-makers and shipping them off to concentration camps a lot easier. That's gotta be the secret plan. We know Stevie don't like no backtalk. To him, it's worth the billion dollars if it means shutting up those loud mouth lefties!