hundreds of new yorkers from all over the city come here to the memorial to mourn and to grieve. hundreds of police officers, firefighters, sanitation workers. now, as you mentioned, in about 40 minutes, the mayor called for a moment of silence citywide to remember these two officers. we're also learning more about the police investigation and brinsley's social media profile. they found 119 photos on his instagram account, including one video he took at a rally, an anti-police rally on december 1st in union square park in new york. they also found 1,000 photos on his telephone. one of them anti-police and a lot of it invst vective and anti-police, anti-government. they also found a video of him in a brooklyn mall. between noon and 2:30 they lost track of him and they're looking for any help the public may be able to provide, any more information into those hours leading up to this shooting.