You could, but you do not have that authority to speak for the Catholic church as such.
Though the Catholic Church officially sees the Protestantism as 'separated', it does not deny that it falls within the boundries of Christianity.
What I will say is that our religious 'flavor' had nothing to do with those of us who gathered for the day on the Washington mall to pray for our country - nor in dozens of locations across America where Catholic joined their Protestant brethern to honor God. Perhaps you life may be less bitter if you consider those facts.
Your attacking the Mormons is a bit like the pot calling the kettle black.
Incase you haven't noticed - the official position of the Catholic Church is the same as Protestantism - mormonism is not part of Christianity. And this thread was Mormonism and Catholicism wasn't it?
Paul had this to say about such attitudes as yours -
Rom 16:17 KJV - Now I beseech you, brethren, mark them which cause divisions and offences contrary to the doctrine which ye have learned; and avoid them.
As a former Catholic, I view Catholics as my Christian bretheren. We may scuffle on peripherial issues, but there is no problem with us both affirming our belief in the Apostles or Nicean creeds - which reflect the core of beliefs of Christianity.
Since this thread is about Mormonism and Catholism, you may want to keep it there. If you want to stir up trouble - you know how to start a new thread.
Resistance is futile!