Faction

Madison's definition:  " By a faction, I understand a number og citizens, whether amounting to a majority or a minority of the whole, who are united and actuated  by some common impulse of passion, or of interest, adversed to the rights of other citizens, or to the permanent and aggregate interests of the community."

1.) Anything like a cult?
2.) Is it considered against the Constitution to particape in a faction, isn't it bad?
3.) Or is it like practicing the 1st amendment with freedom of speech kind of?
4.) When writing about theses factions, which ones were relevant in the US?
5.) Are political parties considered factions? How much more power does a faction have to gain in order to become anything more.. which would be considered bad or biased.

MY definition: From where I see it, a faction is basically a group of people with similar morals, thoughts, ideas and values coming together to strengthen the cause of a certain arguement in politics.  I think a faction can be bad if it more so focuses not on an issue but the issue that is a group of opposing views by people.