Social media users have shared about countless acts of kindness. Here's a look at just a few.
Seven-year-old Chloe Diaz of Wimberly, Texas, passed out free lemonade to local police officers and first responders. The lemonade came with a side of free hugs, ABC affiliate KVUE reports.
Every time Georgia man Avery Rosser sees a police officer, he says, he asks to pray with them for peace.
A deputy in Beltrami County, Minn. discovered that his lawn had been recently mowed. It turns out a local teen named Brett was responsible. Brett left a note saying he'd like to continue to mow the deputy's lawn. The department posted about that and numerous other acts of kindness on its Facebook page.
Officers in Russellville, Ark., were treated to donuts from a 5-year-old boy who wanted to do something nice for police.
Comfort dogs flew from Chicago to Dallas to visit with police officers and residents and spread a little joy.
Davide Martello, a globe-trotting pianist known for his touching performance at the site of last year's terror attacks in Paris, traveled to Dallas to play John Lennon's "Imagine," just as he did in Paris.
Police in South Euclid discovered a sweet note along with roses in the windshield of their cruisers. The note thanked them for their sacrifice.
In Houston, a group of police officers at a restaurant had a stranger paid for their meal, but it didn't stop there. When the officers got up to leave, the restaurant erupted in applause.