As a society, we've arranged our schedule around Christianity: Christian days of worship and holidays are "standard" days off work. Other religions don't get this privilege. This has lots of effects that disadvantage non-Christians.
As an example (I'm a transportation engineer, so my brain goes to traffic impacts), say you have a plot of land next to a high school that you're looking to develop. You have in mind a place of worship for 1000 people... but what do you build?
If you build a mosque there, the peak of site traffic is going to be on Friday afternoon, just when the high school - and background traffic - is at its busiest. This can often mean that to build a mosque, you'd need expensive traffic upgrades: maybe building a left turn lane, or lengthening turn lanes at a nearby intersection. Expensive stuff.
OTOH, if you build a church there, the peak of site traffic is going to be on Sunday morning. There will be no traffic from the high school and background traffic will be light. Odds are that the road network can accommodate the church without expensive upgrades.
This difference in direct cost - which will end up as a major difference in out-of-pocket cost to the members of a religious congregation - can be traced back entirely to privileged treatment of Christianity: we shut a lot of our society down on Christian holy days, but Islam isn't afforded the same luxury.
So... what should be done about this? Do you agree that the mosque is being treated in a discriminatory way (maybe not deliberately, but discriminatory in effect)? If so, how should we as a society respond?