You don't have to go back to 30s. Even in the 90s where tickets would be actually given to school kids and the moment you didn't sell out your tickets, you would buy it for half of the price. The football in England, even Arsenal, revolved around the community of the area, multiculturalism and footballing tradition was never mutually exclusive and people always look forward to matchdays because of the atmosphere and as I said cultural unity, as coming together and support the club you love.
Nowadays, the football is about who can afford it and who is ''cool'' enough to be a supporter. Having been to the pubs around the Emirates, it was really sad to see people who supported their club but could not afford to go there and had to settle for pubs around the stadium in order to support their club.