Yoga teachers sue San Diego for banning donation based classes in public parks without permits

SAN DIEGO (CN) - Early last month yoga instructor Amy Baack arrived at her usual spot at Sunset Cliffs - an affluent neighborhood with a popular recreation park that has a picturesque view overlooking the Pacific Ocean in San Diego - to start her free Sunset Slow Flow class. 

But instead of seeing her yogis eager to salute the approaching sunset, Baack found barricades blocking the shoreline park and ra