WINDSOR, ONT.—Canada’s self-styled “Prince of Pot” returned to a raucous welcome from supporters Tuesday after serving his U.S. sentence for selling marijuana seeds, vowing to continue his activism even if it means more arrests.

Loud cheers and large clouds of pot smoke arose as Marc Emery, 56, arrived in this border city after completing his five-year sentence for selling marijuana seeds from Canada to American customers.

Emery hugged his wife Jodie Emery, who wants to run in next year’s federal election for the Liberals — Leader Justin Trudeau supports legalizing marijuana — then launched into a long, pro-Liberal speech peppered with prison anecdotes.

“I do believe that they are sincere that they will legalize marijuana,” Emery said.

“I know it’s the most uncool thing in the world to have to say, especially to young people, that voting is the answer, but it is. It absolutely is.”

Emery acknowledged that he has a lot of work ahead, as many people in the “cannabis culture” don’t often vote, but he called it an “underestimated voting block,” with a lot of potential power.

“If we can get this Liberal majority government next year we’ll never need to go to the polls to make marijuana legal ever again,” he said.

In the meantime, he plans to hit 30 Canadian cities next year ahead of the election, tour universities in the winter and take his message international, going to countries such as Spain and Ireland.

“Whenever we make those appearances we’re going to be giving the same message and it’s a worldwide message: Nothing good comes of marijuana prohibition,” Emery said.

“If you don’t want young people to smoke marijuana that’s one thing, but to give them a criminal record, to stigmatize them with a criminal record, to put them in jail for one night . . . to me that is a very traumatizing thing.”

Emery said he has been arrested 28 times for “marijuana civil disobedience.”

“It may not even be the last if I have to continue to prove my point,” he said.

Emery also plans to go back to work at the Cannabis Culture store in Vancouver’s Downtown Eastside.

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Shortly after Emery finished his speech, in which he frequently vilified Prime Minister Stephen Harper, Public Safety Minister Steven Blaney issued a statement connecting the “convicted drug trafficker” to the Liberals.

“While the Liberals would try to make it easier for our children to access marijuana, Canadians can count on our government to put forward policies that keep drugs off our streets and keep our families safe,” Blaney said in a statement.