ecnalg,
Not saying it doesn't happen, but I've honestly never seen that side of raccoons. I saw them have lots of brief spats with each other, characterized by a lot of noisy posturing and maybe a quick slap or two like guys acting macho when they don't really want to fight. Bickering with each other seems almost to be something of a sport with them, but from what I've seen it's all posturing and pretense, no real violence. I've never seen a single raccoon emerge with so much as a scratch, much less any blood spilled. It's just their way of arguing to settle disputes, but it can be quite comical to observe.
Not saying it can't happen, but I have never seen a raccoon express anything along the lines of rage or even anger. In all the years I was hanging out with them and observing them, I never saw any destructive behavior at all, so I can't really imagine why they would have destroyed your hanging planter that way.
Kits are playful - much like kittens. Just as with a litter of kittens, I'm guessing a bunch of kits can probably do some damage while playing. They did sort of wreck my patio a time or two. From the aftermath, it looked as though they had stood atop the outdoor baker's rack and just thrown everything from the shelves onto the patio floor below like a bunch of drunken, partying college kids. The patio was littered with lots of broken pottery and spilled dirt the next morning. They even managed to toss the globe from the outdoor light onto the patio floor. In reality, I'm guessing they were just up there on the baker's rack playing, and things just happened to fall, probably due to all the little kits up there bumping into things. And, who knows, once the 1st item fell, they may have found the sights and sounds so interesting that they threw a few more down just to watch them shatter.
Kits and very young raccoons are innately inquisitive about everything, and they particularly enjoy touching things. They enjoy the tactile sensation of things. Watching them up close, it's almost like observing a blind person reading braille. When they encounter anything new, like plush toys or the feel of the plastic pool bottom under water, they will spend a lot of time just 'reading' it with their long and extremely dexterous 'fingers' as though to learn all of its secrets and to insure they will remember it next time.
Another characteristic of kits and very young raccoons is that they remind me very much of fidgety people like my brother who absolute must 'play' with everything around them, picking up things from your desk or from end tables and mindlessly turning and twisting those things endlessly as they talk to you and doing this to the extent that you are certain they will end up breaking something before it is over. You either spend the entire time holding your breath for fear they will wring the arms and legs off some treasured ornament, or you spend the whole conversation repeatedly taking things from them or safe keeping - and if you are smart giving them something less valuable to fidget with. If you have ever known one of those people, they you know the basic behavior of kits and young raccoons. They aren't trying to break things. They just have to fidget with everything constantly, and sometimes that results in breakage.
Raccoons remain playful up until age 1 when they have their 1st litter. That seems to settle them down considerably. Beyond age 1, raccoons tend to be rather lazy, kind of like humans. Mature raccoons usually don't expend any more energy than absolutely necessary to locate food, eat it, and get back to there tree to resume their nap. Contrary to popular myths about raccoons as vicious fighters, they are the Kissingers of the animal world, and will go to great lengths to avoid conflict (except for their noisy but mostly fake spats with each other, that is). Unless absolutely necessary to defend themselves or their progeny, they don't waste energy on things like fighting. I have this mental image of them sacked out in their respective trees with a beer and a pizza or maybe some bon bons, watching TV in something comfy, probably with the top button undone.