They couldn't stop 20 dirt bikes?
WJLA posted video of multiple ATVs and dirt bikes headed along Route 50. The group eventually got on southbound Route 1 and headed into Alexandria. The video is embedded at the bottom of this post.
The first incident happened at around midnight on Saturday, April 8. A group of 15 to 20 ATV and dirt bike riders went the wrong way across the Key Bridge into Rosslyn in Arlington after "wreaking havoc" in the Georgetown area, with Arlington County Police following them, according to one user on Twitter.
Not long after, they rode down S. Joyce Street in front of Pentagon Row with two police cars following them. Both cars had their lights flashing but no sirens, and made no attempt to stop the group.
Ashley Savage, an Arlington County Police spokesperson, confirmed that police started following the group after being advised by the Metropolitan Police Department that they were entering Arlington. The police cars followed them until they reentered the District of Columbia at 12:12 a.m.
Driving all-terrain vehicles on public highways or other private property is prohibited by Virginia law. No citations were issued to the group.
https://patch.com/virginia/arlington-va/atvs-dirt-bikes-spotted-arlington-again-video