I have been thinking about this a lot today. I have always been one for standing up for minority groups, and for easing the way for the less fortunate. There are many old people all over the world in dire straights, and if a group were to be formed I would expect it to be proactive in fighting their corner.
But, in all honesty, I don't quite see the point of "Old Pride". I am, mostly, happy to be what I am and where I am, to enjoy the company of my contemporaries as well as of my family, and to let the young have their time, their voice and their opinions. (but being reacy to object!)
This doesn't mean standing down, or taking a back seat, but just, as we do, getting on with it. We are capable of making a fuss when necessary, of lobbying and of campaigning, but as human beings, not as a discrete group.
Youth culture is, as the words suggest, inevitably transient, because the young will become old. As we have.