Scenario, customer returns products that are faulty or not as described, shop assistant trots out the standard line of no refunds, like many small retailers do, fair enough they're not Screwfix. Disgruntled customer is denied her legal rights and maybe theres a consumer rights offence of misleading information. Angry, she takes goods to the equivalent value, or less. The shop owner, hearing the commotion, is told (you can see it on the video) that she has taken goods without paying and goes into action, grabbing her by the throat. No wonder he has regrets, he may lose his livelihood. She has cause to reflect on her aggression as well.
Six of one, if you ask me, maybe they should sit down together and find the courage to both apologise. It will upset those on both sides of the political spectrum looking for another riot, but that would be reason enough.
Blup