If "the art" is the private property of "the one man"....the "other man" probably ought to resist the temptation to destroy it.
Or has the Catholic Church forfeited the right to own its own property?
Live by the Established Church, die by the Established Church.
The art was created and collected when the Catholic Church was the Established Church of England, Wales, Scotland.
Then the politics changed. The government, of which the Church was part, took a different tack, and had something different they wanted from the the branch of the government that was the church, and their assets were scrapped or liquidated.
Well, the Anglicans have turned Canterbury Cathedral (and all others) into a museum. You have to pay to go in. We’d appreciate it if they would give it back (and all the others, too).
Perhaps “things” in this world are not nearly so important as treasure stored up in heaven...where none of those “things” will ever be seen.
Catholicism puts way too much emphasis on the bling and treasure of this world instead of making disciples of men for the Lord.