No one is going out killing or lynching Qadianis/Ahmediyya in Pakistan. If that was the case, Rabwa would have been demolished like the Babri masjid long time ago. Violent incidents did, in fact, occur in the past but were instigated by both sides.
The major reservation of Pakistani Muslims against the Qadianis/Ahmediyya, are as follows;
1- Although they are declared non-Muslims by the law, they keep lying to hide their true identity unlike other minorities in Pakistan such as Christians, Sikh and Hindu, etc.
2- Lying on the paperwork for going abroad since NIC is not required in most cases and Pakistani passport doesn't reveal religion.
3- Banter of being a persecuted sect of Islam and believe that rest of the sects are in fact non-Muslims.
Truth be told, British did a thorough research on the Muslims of the sub-continent and found out that despite all the differences among various sects, they are still united by one fact and that is the finality of prophet hood so, in order to leave them in disarray, they planted this seed of discontent to always keep them at each other’s throats instead of moving on.