we have to make ourselves heard
I always tried to find ways to help students remember important stuff. When I was talking about the American Political System I often mentioned "The Two Bs" - Bucks and Bodies - groups, causes, and the rest have power in the political system because of one, or in the case of the NRA, both of those things to throw into the mix. They have huge amounts of money they can throw at an issue to run and staff a campaign, make and buy air time for ads, or just give to your opponent. Or, they have a lot of people they can turn out to vote, or for lobbing efforts, rallies, or for volunteer work.
That's all Barney is saying. If you want this, you better organize people to support it either with their work, or with their pocketbook.