Surveillance footage showed a group of around 60 teenagers looting and vandalizing a Walgreens in Philadelphia on the 4th of July. The group was seen running through the store, knocking over displays and taking merchandise without paying for it. Police say that a 46-year-old man was injured after one of the teens hit him over the head with a bottle. 
This comes after news of a flash mob entering a North Face store in Wisconsin, stealing over $30,000 in merchandise in about 30 seconds. No arrests have been made in either incident.