Montgomery County, Maryland, is a wealthy suburb of Washington, D.C., and some still hold an image of it as a white enclave. Local Democratic politicians, however, will tell you how diverse Montgomery County actually is and how it’s becoming more diverse every year.

It’s true: MoCo, as the locals sometimes call it, is less and less white, more and more immigrant, and even more Muslim every year. Here’s the twist: This diversity is causing a major headache for the county’s liberal establishment.