Aseem Sappal is the dean of the University.
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He says, "We've decriminalized it in that sense and that gives the people and the community a way to have the opportunity to have events such as this."
Just this January, California legalized recreational adult use of marijuana, without a medical card.
But back in 2012, D-E-A agents raided Oaksterdam and temporarily shut it down.
Canna-Crawl is a way to celebrate progress.
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Now, all kinds of businesses around Telegraph Avenue are getting involved.
Sarah Ceti is an art curator and has set up a collection near the University.
She says, "everybody is impacted by it and I think it's awesome the businesses and restaurants are getting involved because it shows their support."
Meantime, specific bracelets given to Canna-Crawl attendees offer discounts at participating businesses.
RELATED: 4/20 festival in San Francisco expected to draw record crowds
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At Harborside Dispensary, on 4/20 they'll offer deep discounts.
Thomas Scott plans to attend Canna-Crawl. "It's gonna be a fun time along with everybody getting a little high so it's not like everyone getting drunk and crazy."
Smokie Arce is an artist and will be displaying her paintings at two locations tomorrow. She says, "It's not a dangerous thing, we're not out here in the streets going wild or anything like that."
Still, many law enforcement agencies plan to add patrols Friday.
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