tonight our chief foreign correspondent richard engel reports on how the russians are behind the rapid spread of certain videos that a lot of us have seen with the goal of increasing racial tensions in our country. >> reporter: the videos go viral fast. at least 18 million views for this one showing a white woman calling the police in brooklyn, claiming a 9-year-old african american boy groped her. >> i just was sexually assaulted by a child. >> reporter: cctv footage showed the boy innocently brushed past the woman who was dubbed corner store caroline. she later apologized. and more than 16 million views for this video from texas showing a woman upset a taco truck was outside her house. >> vamanos. i'll call i.c.e. >> reporter: turns out these videos and dozens of others all inflaming racial tensions in america did not go viral by accident. they were pushed and promoted by russian operatives, according to