The facts are fans/supporters can do nothing about who owns the club, the only option if you don't like the owners is to go and support another club, or stop going to matches, buying club merchandise, etc. The Glazers are hated basically because they are not football people and see the club only as a 'cash cow', they will leave when they are ready and who takes over is actually up to them.
I can honestly say as a lifelong supporter I am not bothered, nor ever have been, about who owns the club. Of course, like other supporters I've been angered by what previous owners have done, e.g., the way Mark Hughes transfer to Barcelona was undertaken by Martin Edwards, and more recently the current owners buying, usually of 'ageing' players to sell shirts, rather than will they improve the team (obviously managers have something to do with that as well) etc.
However, any influence supporters might have had on ownership was lost when Martin Edwards turned the Edwards 'family hobby' of owning United into its main family business... the die was cast!