Too many assumptions and generalizations here.
...but it is now just an excuse for anarchy.
Why would they want to cause anarchy without any reason?
It is the people with ambition who move to another place so that should be a positive thing for an area to receive these people.
The Nigerians in Hillbrow seems to be a good example of people with ambition really improving an area.

It is the low lives who complain but they probably would have been unemployed anyway.
I think there is some genuine concern regarding South Africa's immigration and border control policies. Please could you also site evidence which shows that these people would've been unemployed anyway.
The root of the problem is too many people but it is these same low lives who procreate like mad.
Once again. Please define what you mean by "procreating like mad" and the evidence to support that claim.
My opinion on this matter is that these Xenophobic attacks are appalling and creating an extremely dangerous situation. They are also using barbaric ways to raise their concerns. That is unacceptable.
However, assuming that these people are completely useless, with no valid concerns, with their only aim to cause anarchy does not help.