Just moved to the area. I was passing that street in the middle of manassas , and I noticed a lot of different flags from different countries (mostly spanish) all in someone's backyard. Why did they do this? Does it hold any significance? Did something happen there

It has to do with a form of protest against the anti illegal immigration stance the county board of supervisors took approx ten years ago. Google "9500 liberty street" and you can find more info

It's always those spics that gotta make us whites mad