Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page Llaguno Overpass events:

"

In 2012, Nelson concluded after a five-year investigation that sharpshooters were not involved in the conflict and that the day's violence began when several Chávez supporters standing at street level fired handguns into a crowd of protestors; opposition-led Metropolitan Police later returned fire, leading to injuries and deaths among both government opponents and supporters.[15]