Some groups organized to resist and created barricades, some groups were armed and some shots were fired, other groups only had clubs, people still believes police will save their asses even as everyday they are robbed and killed and the police does nothing about it.
There are not so many guns in the civilian population here as in US, and besides the lootings occurred in one of the major cities of the country, usually people who owns guns lives in more suburban areas or the country.
Big problem is that people is afraid that if they kill someone, the family and friends of the victim will take revenge and kill them, or they will end up in jail, very probable with the fucking current political agenda, were all the delinquents are victims of society who don't know what they are doing...
Is confirmed one 20 yo guy died shot in the chest, also a Chinese owner of a supermarket resisted the looting wounding 2 attackers so the attackers put on fire the shop and the owner died asphyxiated inside, and a 85 yo man died of a heart attack when a motorcycle gang robbed his house, there are more than 200 wounded but there are not details about the injuries.
EDIT: Only semi auto rifles are banned, semi auto pistols and shotguns can be owned.