What can happen anywhere? Ahmadis are only persecuted this bitterly in Islamic Republic of Pakistan and mostly since it became Islamic Republic in the 70s. Its not just some satanic people, the laws of Pakistan seek to actively persecute Ahmadis (example below). There are rallies in Pakistan every day, but how many do you see against such laws? There is wide spread support for such persecution in Pakistan. In reality its hard to find another country in the world which so proudly takes it upon itself to actively persecute its citizens at official level.
This is clearly a gross violation of human rights but how many in Islamic Republic Pakistanis do you see complaining about it?
Just to drive the point home let's see if a similar law would be enacted in India
how many would find it amusing?
Fact is Pakistani laws and its treatment of Ahmadis can only be compared to the dark ages (terms like witch-hunting and burning on cross come to mind – although they now hang you with the fan instead), and deobandis and Jammat Islami have made sure of that.
I am not even going to go into any discussions of why Ahmedi's were separated from the circle of Islam .. clearly the law code came into being to show our seperation from the Ahmedi's to remove confusion of the term "muslims"
however it doesnt show anywhere in the law , that one should kill or harm ahmedis... if any individual does it , then I will strongly detest that individual for his/her satanic deeds . No religion allows murder or harm to any individual .