https://youtu.be/xZFH6hAtOkM
CCTV footage posted online shows three holidaymakers, including a woman in her 60s, being punched to the ground and kicked in the face by several men during the Songkran Water Festival in Hua Hin, a coastal town about three hours south of Bangkok.
Knock out starts around 40 seconds into the video !
The victims were a British man in his 40s and his parents, both in their 60s.