This is a video of the phonecall that confirmed that the ballistics that were found on site matched the ones that were fired at both the Maidan protesters and the Ukrainian police in in 2014.
Andrey Parubiy, the chief of security at the time was filmed evacuating a team of snipers from the building upon which the snipers were perched.
The snipers all wore black balaclavas and black unmarked tactical clothing. They even brought their own aqua green foam mats.
There is also an abundance of footage of Ukrainian police aiming and shooting at the same snipers perched atop the Hotel Ukraine. However, the British news omitted this part of the story and the resulting escalation caused the protesters and the police to fire at each other, and this is what the British news focused on.
Der Friedensstifter 