I see no one being unkind or not being polite to each other in here, but only discussing our indifference's. It is called the Roman Catholic Church named from Vatican City in Rome where the headquarters for the Catholic Church is found. Many Catholic Churches still call themselves Roman Catholic Church and even printed on the church building or billboards outside the church.
As I pointed out in my post, the title you might see on a church is because they are a Roman (or Latin) rite church. The Roman rite is only part of the whole Catholic Church led by Pope Francis. Therefore to use the term Roman Catholic Church to refer to the whole Catholic Church is incorrect. The general term Roman Catholic Church was a pejorative term of the "reformers" at the Reformation.