"Catholics can take communion in Protestant churches."
They should not - it is both idolatry and blasphemous to do so.
It's interesting, though. A Protestant would not declare another person unworthy of communion.
Then again, perhaps you are saying that the Catholic Church is the one true church and observing its rules and no other's is allowed.
I would disagree.
They should not - it is both idolatry and blasphemous to do so.
"Idolatry"? Why? Who in a Protestant church is worshiping a chunk of bread and shot-glass of grape juice? We leave that kind of activity to our Catholic friends. 8-)