It might have been planned in the sense of "let's all meet there", but organized crime or even terrorism gives them too much credit and goes into conspiracy territory.
I think it's much more likely that it was "natural", as fucked up as that might sound. I said this last year already in the other thread but the refugees being 70% young men is dangerous and demands extremely quick ways of proper integration considering the high number of people.
- large groups of people can turn to shit very quickly in general (mob effect, anonymity etc.)
- young (single) men are easily the worst and potentially dangerous group of people regarding any metric and no matter the culture/race
- A certain percentage of adults are shitty/criminal to begin with, so obviously you will always have some bad apples to deal with. But you quickly might reach your limit to deal with them depending on the total number of refugees.
- couple that with alcohol and a party that happens in every city at every outdoor place where people gather (that's the simple reason why it feels organized btw)
- sexual frustration and a cultural&religious upbringing that sees women as lesser worth humans, especially if they are from other cultures/religions.
- lack of respect regarding authorities and western women (dressed up etc., thinking they are more easy etc.) in the sense that lines are quickly crossed. While at the same time a false sense of honor is applied to themselves, family and culture/religion.
- general frustration due to living in relative poverty (and crowded placed with limited resources) when for many of them Europe is supposed to be some sort of paradise for everyone and the sudden realization for ~half of them that in half a year your asylum request WILL be denied because you're not from a warzone.
Note that this is not excusing them of anything but people should have known what they are "importing". This also doesn't mean we should just block warezone refugees from entering Europe nor stop helping people in need.
But you have to be clear about what you're dealing with and don't stick a left or right political label to it. Some cultures are just easier to live with western standards than others. It's about efficiency (kicking out economic refugees faster etc.) and coming up with social structures that ensure successful immigration quickly (we still have problems with decades-old immigrants because their kids got more conservative/radical than their parents).
The biggest problem are the high numbers, the systems and resources in place are not up for that. As are the police forces. So, again, get rid of economic refugees ASAP and get all European countries to pull their weight by dividing up the total number of people.
Side note: My parents live in a small city that got a moderate number of accepted refugees (i.e. from warzones) and the place is like a paradise for immigration with Germans helping out the refugees (like free German lessons, cooking together etc). They don't live all in one place either. There are a lot of single men of course but there don't seem to be any problems and instead they show their gratitude by spontaneously cleaning up the Christian graveyard and stuff like that.