Simon instructed his subordinates then went to take down more of the gunmen. His luck ran out soon after as those who remained became more vigilant, most likely because word of what happened to their comrades had reached them. Because of that, he was forced to slow down a little and that let to his stress building up as more and more children were being taken away.
Contrary to his expectations, whatever operation those gunmen were involved in, it wasn't a small one. Their main goal appeared to be kidnapping young children. They seemed to have detailed intelligence on the residents of the old city and were going after those who had kids younger than fifteen.
The parents who tried to stop them were killed with no questions asked. The kids then got taken to a single retrieval location where more gunmen waited around a bunch of trucks where the kidnapped children were being kept.