Lately, many people have proudly chosen to display black and white American flags with a blue stripe in the middle.

The Thin Blue Line flags, which show support for police officers, is the symbol of the #BlueLivesMatter movement, also showing support for the fallen Dallas police offices.

Check out some of the flags below:

Engine 822, salute to their fallen first responder family. Flying the "thin blue line" flag. pic.twitter.com/8kh99UHiry

— Rural Metro Fire (@RuralMetroCAZ) July 11, 2016

https://twitter.com/DETECTIVE4LIFE/status/752299105590865920

If you're interested in the thin blue line flag pin I wore on O'Reilly, it's available here https://t.co/4A5ptVejRu pic.twitter.com/JqD4YvtUl5

— Katie Pavlich (@KatiePavlich) July 12, 2016

To some, that blue line on the flag is just that, a blue line. But to others, that line is a family crest. pic.twitter.com/ev9mrYDLPD

— MarT (@LoehrMarty) July 8, 2016

We now have "The Thin Blue Line" flag honoring law enforcement flying under Old Glory at our hours. How about you. pic.twitter.com/ciOFLJqfLw

— d c Dan lee (@danlee193823) June 20, 2016

This is the kind of spirit that this country needs in the wake of the horrific Dallas shooting and continued threats on law enforcement officers across the country. United we stand.