Complex sentence: Terrorist, militant and paramilitary groups are mentioned if they are involved in this activity for funding, but since their stated aim is ideological and not commercial they should not be considered as mafia-type groups.
Split into simpler sentences: Terrorist, militant and paramilitary groups are mentioned if they are involved in this activity for funding. However, since their stated aim is ideological and not commercial they should not be considered as mafia-type groups.