Characters frequently associated with "police" or "constable" skins.
If you are looking for information regarding Riot Games and actual European police: LoL Brutal European Police mp4
High-skill eliminations or "one-shots" common in community montages. LoL Brutal European Police mp4
If this is about "League of Legends," it may be a gameplay highlight clip (often shared as .mp4 files) featuring: LoL Brutal European Police mp4