A little background information on the video you are about to watch. Travellers and Gypsies love their racing horses and the main way they train and race them is on the roads and even highways in England, Ireland and Scotland. There are many videos on Youtube featuring a race between two or three horses and in almost all clips, you see some serious road hogging with a phalanx of cars, vans, and trucks barreling down the road,in front of the horses, beside them and behind them, on both sides of the road forcing oncoming traffic to swerve off the road or turn off the road to wait until the race passes.
In this video, a police car is attempting to stop the race from encountering oncoming traffic and you can clearly see the cars and trucks at a dead stop in the face of all that vehicular metal bearing down on them. The two horses are racing on the wrong side of the highway when the video starts as the police car tries to force them to the correct side of the road. Notice at 2:50 the car in which the video is being filmed is in the opposite lane forcing a truck and car to come to a stop while he swerves around on the outside. Horse racing on the roads is illegal but it occurs despite the Gypsies knowledge and understanding that it is illegal. Regular driving on the road is not illegal and I am all for Travellers keeping their horse drawn caravaning heritage alive. I own driving ponies myself and share the road with trucks and cars on the proper side of the road and by law, motor vehicles must share the road with my cart or carriage. But no one should impromptu commandeer an entire road and scare the living daylights of an innocent driver who sees this heading towards them.
What is the etiquette point? That illegal activity has its genesis in the belief that one is entitled to do whatever you want to do regardless of the consequences to others. Teach your children to think outside of themselves to consider the effect of their actions on others and work towards solutions or compromises that serves the needs of both parties.