This event whooshed right past me. I only found out about it from information released by the Cypress Police Department:

Tonight’s candlelight vigil at Katella & Winner’s Cir. was uneventful and involved about 50 participants who were peaceful and respectful. The event has concluded and there are no traffic problems or other issues. Thanks to everyone involved for caring for the community. pic.twitter.com/4eJQEkpyBg
— Cypress Police PIO (@Cypress_PD_PIO) June 20, 2020
This is the same location that was used to stage the protest march on June 5.
Louisville Municipal Police were executing a no-knock warrant when they returned fire after Breonna Taylor’s boyfriend shot at what he thought were intruders. Brett Harkinson, a LMPD detective, was fired on the same day as the candlelight vigil.
Juneteenth is celebrated to commemorate the day in 1865 that Union soldiers arrived in Galveston TX to announce the end of the Civil War and the freeing of slaves.