I just saw the first video.
well...
This is not specific to one country, this happen in all.
I just cant stand those hat wearing insects.
When i was 15 years old, i encoutered this kind of situation, with a bit less violence, i was the victim, and was alone. i was traumatized.
In the next 10 years, i learned few things which work great against that :
If you fear the insect, dont show him you fear him. just stay very close to him, few centimeters, to show him who is the boss and who is the insect.
Never discuss with insects, even if they try to talk to you.
Hit first, and dont miss the insect, just like if your objective is to kill him
Dont feel any pitty for the insect while you pwn him, he has no right to use your oxygen.
Use everything you can to beat them, like police only lacrymo gaz. this own , a lot more powerful than usuals. you just need to know a policeman (like ophyte

)
When you are finished with insect, just return to your normal activity, and congratz yourself for being someone very nice , as you didnt kill them or cut off their penis, as they deserve
the worst thing in this video is no one around helped the guy. really, thats horrible, even if i understand that peoples are very scared.
i couldnt stay here and look at that without doing shit.
If i should really say what i feel, i would say bring the guilty guys on a boat, a stone to their leg, and put them alive in the sea, end of Story.