I would ask if he believes that he will be saved by forcing others to do the right thing against their will.
Does he believe others will be saved if they are forced to do the right thing against their will?
Does he believe in collective salvation if government forces all to give against their will. Is there salvation for a evil man who pays his taxes but continues to do evil?
I would follow those questions by asking why you should worry about your own personal salvation if government is going to do it for you?
I’m not Catholic but I agree with the Pope on this one. Collective Salvation is demonically inspired. After all, what better way to get people to neglect their own souls than to convince them that its already taken care of when they pay taxes.
That's a very profound question that every person who claims to be a Christian and social justice advocate should answer.
Which society has more social justice? A modern capitalist society like America? Or a medieval feudal society?
What do the social justice advocates most commonly propose to replace capitalism? Some brand of modern feudalism.