I was kind of hypnotized watching this video. No question, authorities should fix the problem on this extremely dangerous intersection the sooner the better, and I hope they did it already (video is a year old). This is not what kept me glued to the screen. I was watching different drivers negotiating this same corner at the seemingly equal speed with dramatically different results.
What caused this? Obviously older Fiats and Renaults were more vulnerable to skid due to the worn out suspension and probably bald tires (a set of good tires probably costs more than the car itself). But there were quite a few newer cars that did skid, and some oldies did not. This can be attributed only to the skill level of drivers - and you can see how dramatically it differs.
If this video does not trigger your decision to learn how to control skid, I don't know what will...