All Sectarians are trouble makers since they take their "Imams" as authorities besides Allah, and thus, create division.
Allah has named us Muslims, not Shi'as or Sunnies.
22:78 Strive for God with a strife befitting Him, for He has elected you and placed no hardship in Religion, the Creed of your father Abraham. He has named you Muslimeen in the bygone days and now in this Revelation, that the Messenger may be a witness against you and you may be witnesses against mankind! So, establish the Divine System and set up the Just Economic Order, and hold fast unto God. He is your Patron; how excellent a Patron and how excellent a Helper! [2:143. Muslimeen = Muslims = Submitters = Those who submit to God alone = Upholders of peace. 2:132, 2:136]