If there's a haze hovering over Edmonton, well, it's 4-20

Hordes of pot smokers will descend on the Alberta legislature grounds Friday for the very last 4-20 rally before marijuana is legalized this summer.
The annual pro-cannabis celebration is expected to kick off at 1 p.m. Past events have drawn thousands of people to the legislature grounds.April 20 has long been a day to celebrate cannabis and the culture that surrounds it as pot enthusiasts gather by the thousands in public squares, defying the authorities.
But starting this summer, that defiance