Challenges to pluralism
Structural imbalances of power as well as structured social exclusion can be challenges for pluralism. How can there be full democracy when a society effectively excludes some groups from education because of gender or because they can’t afford it?
In your own experience, you may well find that some groups have suffered educational and cultural exclusion throughout childhood. To integrate them into pluralist society, you have to help them counteract the effects of long-term exclusion.
How can there be effective democracy when some groups are so powerful that they can ignore what the voting population votes for?