Get it right. The incident happened at about 1917. Sunset was 1823, and civil twilight ended at 1846. It was cool and rainy. The 7-Eleven was about 0.9 miles away, an 18 minute walk. Reportedly, he was recorded on the store's video surveillance.
As far as I know, cywoody, the original and only source of 'a video exists' was a column in The American Thinker, which stated:
"But a video does exist. The public relations director of 7-Eleven told me that, according to the company's manager of security, a store camera captured an African-American male (she wouldn't commit to "young") purchasing a bag of Skittles and a can of tea (she wouldn't say that it was "Arizona" tea). The hard disk with the video was removed after the story broke, and it has been subpoenaed by investigators for the state and/or county. The company has not made it available to the media. The public relations director could not specify the exact time of the purchase but said it was between 6:00 and 6:30.""The 7-Eleven, according to maps.google, is 0.8 miles from the entrance to The Retreat at Twin Lakes, a 16-minute walk."