#3 Get behind the manager / team
These days, ever since Liverpool experienced a change in guard, Anfield seems like a fortress again. Irrespective of opposition or the importance of the fixture, the Kop are one in unison singing and getting behind the team and their manager.
Arsenal fans are some of the most hypocritical fans in the Premier League. They expect everything to be done the best way possible but they don't expect it to happen in a way that could damage the club in the future. Arsene Wenger isn't the kind of manager who would spend £100 million year in and year out to improve the team – look at what United are going through having done something like that.
He's working towards ensuring the club are 100% self-suficient in the future – maybe not even under his reign. While the club's failure to win trophies has been uncomfortable, the fact that the future might be brighter than everyone elses doesn't seem to matter to the fans of the club.
Let's face it, walking out of the stadium and holding banners isn't going to drive Wenger out. He's right not to listen to the fans as well. Get behind the team, put your personal agendas aside, after all you're a very small part of a huge fan base. You don't have any sort of influence to tell the club how to do their job.
Maybe just maybe if all Arsenal fans got behind the team and their manager, they'll be able to motivate their players and bring about a change in their performances.