Slightly OT: I get a bit tired of hearing and seeing the term "militarised police" as per the video. Tactical groups like SWAT have existed for decades, wearing armour and carrying "hi power miltary rifles" (I've yet to see a low power military rifle). The gear that they wear is the most effective form of defence against the high risk threats they face. Why wouldn't they want to roll with the best protection they can get? Ok sorry done... /OT
The point of the term isn't SWAT teams. It refers to the massive increase in the number of swat teams and their use, but more importantly to the fact that a great many departments equip regular officers the same as SWAT teams.
To illustrate, my local county sheriff in 1980 had three SWAT officers, who combined with four others from two other counties to form the actual team when it was needed, but doing most of their work as three separate units. On average, the full team was used less than once a year. Aside from each units' armored truck, all SWAT gear was reserved for these seven officers, and aside from a small surplus there was no extra.
Today, the same county has two of their own SWAT teams, which they use on average ten times a year each (frequently both at the same time). The other two departments they used to share a team with now have three SWAT teams between them. Each SWAT team has a total of five armored vehicles, four of which are combat vehicles with gun ports, battering rams, tear gas mortars, etc. All non-SWAT officers (of which there are twice as many) have access to SWAT equipment - each patrol car carries sets for three officers in the trunk. The SWAT teams share one mine resistant vehicle (which despite ripping up pavement is also used for routine patrols and traffic stops), but have their own helicopters. There are enough extra SWAT weapons that even after failing to account for fifty assault rifles there's still three guns per officer in surplus.
The violent crime rate per capita is the same as it was in 1980 but the population is down by a third. The petty crime rate is down, drug crime is down by a lot, the old gangs are gone (the final sign of a city dying is when the pimps and drug dealers relocate), and the new gangs are weak and disorganized, and more interested in causing trouble than profitable crime. They have the weapons not because they're needed, but because they're free from the military. They use them not because they're needed (they sent both SWAT teams to my house for a welfare check after I accidentally dialed 910 instead of 810 and triggered a 911 hangup alert, and they've called in those three other teams from neighboring counties and sent all five to raid a house over a prank phone call), but because having them around is expensive and they need to justify the cost.
When the media says, "police militarization," they don't mean, "SWAT teams exist," they mean, "SWAT teams have increased in number and use by an order of magnitude during a time when the situations calling for them have declined, and normal officers have gained access to SWAT equipment at a time when the threat to them by attackers is at an all time low."