Refer to Pope Leo's Encyclical Quod Apostolici Muneris, Dec 1878.
Collectivism comes into the discussion as soon as those discussing decide to speak the truth.
Public schools, public hospitals, food stamps, etc. are collectivist institutions. The government uses force to take money from those who work in the private sector and then spends this money providing these services to those of the government's choosing.
If the government decides to take money from hard-working, law-abiding Americans and then use that money to provide the necessities of life to those who merely managed to sneak across the border in violation of the law, then the taxpaying Americans have been forcibly put in service to those law-breaking foreigner by the ones who happen to control the levers of political power at the moment.
This is collectivism plain and simple, and it is ungodly.