Thousands flock to SF's Hippie Hill for 'unofficial' 420 celebration

Thousands of weed worshipers flocked to San Francisco's Hippie Hill for an unofficial, but still spirited version of 420. Subscribe to KTVU's YouTube channel:    / @ktvufox2   KTVU delivers the best in-depth reports, interviews and breaking news coverage in the San Francisco Bay Area and California Watch KTVU's newscasts on https://www.ktvu.com/live Download KTVU's news and weather apps for free at https://www.ktvu.com/mobile-apps Subscribe to KTVU's newsletter at https://www.ktvu.com/newsletters Follow KTVU on Facebook:   / ktvu   Follow KTVU on Twitter:   / ktvu   Follow KTVU on Instagram:   / ktvu2