Classifying People into Sects and Factions

Question:
Is there a word for those who occupy themselves with classifying people into factions—Brotherhood, Qutbist, and Jama'i—instead of focusing on da'wah (calling others to Islam) and unity?

Answer:
We only point out errors; as for classifying people, that is not permissible. This leads to evil and fitnah (trial, discord or temptation), and it increases evil. Division is division. However, we point out errors and clarify what is correct. We all return to the Book of Allah and the Sunnah of His Messenger (peace and blessings be upon him), and we become one group instead of many groups. This is the result of factionalism. If we had abandoned these factions and been as this land was from the time of the call of Shaykh Muhammad ibn 'Abd al-Wahhab until recently, we would have been one group, one hand, with our imam, our scholars, and our common people, all one group.
We have not known these divisions and these ideas except for a few years. So we must abandon them and return to what we were upon of truth and guidance.
We abandon these names, but we must also abandon exchanging insults with titles. We must abandon exchanging insults with titles. One says, "This is a Brother," "This is a Jama'i," "This is such and such," "This is such and such." This increases evil. There is no objection to pointing out errors without saying "so-and-so" or "so-and-so." We say, "This is an error" and "This is correct." That is all. Yes.