Do Roman Catholics Worship Mary?

Friend: I cannot accept Roman Catholicism, it is so different from Christianity la.

Daniel: Err... I think what you mean by 'Christianity' is Protestantism cos' Roman Catholicism is one stream of Christianity.
Friend: Ya mer?
Daniel: Ya la. So, what is it about Roman Catholicism that you cannot accept?
Friend: Iyoh, they worship Mary lor...How could they treat Mary as God? I cannot accept that la. You can mer?
Daniel: *Explanation mode*
--
I have many (and I mean many) ill-informed Protestant friends, even pastors, who are repulsive towards Roman Catholicism because they think that the Roman Catholics worship Mary. What is rather frustrating is that some of them would not accept the explanation and insist irrationally on their view.

Those who are not sure whether Roman Catholics worship Mary, you might want to read here and here.

Perhaps we should really get our facts right before we start acting foolishly in criticising other Christian traditions and religions.