What it was was idiots cops on another cowardly shooting spree. All of the people shot except the original victim were hit by police bullets. Police in the US have become too scared to do their jobs effectively any more.
That oath is little more than a courtesy and a hang over from times past when the ruling monarch was the nation's supreme leader, before Great Britain had a democratically-elected parliament.
The facts are quite simple; these shootings are becoming so frequent I'm surprised they even make the news any more. Doesn't anyone find this even slightly disturbing?
That oath was required as of 1955. Regardless, I take your response to mean that you really don't expect military members to honor their oaths? If you can't trust them to honor an oath freely given, how can you trust them to defend your country with their lives?
And another point to consider, why were the mainstream talking heads so eager to jump to conclusions about this shooting? For example, on CFRB they were bragging on and on about some lone middle class such and such who snapped and massacred innocent bystandars by volumes. The government does its usual share of cover ups, spinning and half-truths, and the media immediately buys it and blows it up sensationally. Instead of a clear-cut Falling Down scenerio as the media had wanted, this was more like a wacky Naked Gun episode.