Certain strategies that are used in fighting low-level terror can backfire badly.
The first among the strategies for fighting low level terror that can backfire badly is the one where people are encouraged to form their own vigilante groups to fight the terror. The problem with these vigilante groups is in that the members are usually people without proper security training. So they overreact to situations, instill a reign of terror and end up terrorizing the very people they were meant to protect!
The second among the strategies for fighting low level terror that can backfire badly is the one where state agencies start hunting down the people suspected of being the masterminds of the terror and executing them without any checks and balances system. This approach is likely to give rise to extrajudicial killings. The agencies that carry out the elimination of the people who perpetuate the low level terror may, of course, claim that they have good intelligence on who the people to target are. But errors often creep into the intelligence collection mechanisms: as these depend on networks of informers, who sometimes turn out to be malicious or innocently mistaken. That is why it is always best to process people who are suspected of these sorts of things through the courts, inconvenient as that may be.