“The overall impression given by the internal Garda investigative process was that complaints or matters of concern were put through a process of filtration or distillation so that, by the end of the process, any matter of concern had been removed as a form of impurity, and only what was good was found to remain.”
Gardaí in North West Mayo routinely harass people in the area with video cameras (as well as violence), however they don't like it so much when the camera is turned on them.
One point to note is how often the Gardaí switch their numbers. The Garda whose on camera at 2:57 is a particularly violent Garda. In this video his Garda number is GA454. Five days after this video was taken he was wearing MY218 and assaulted 3 peaceful protesters.