Given that the source of the COVID-19 pandemic could well be live animal markets in China, especially those selling wild animals, I have been playing a small part in discouraging wild animal markets.
There are many good reasons to close them down. First of all, numerous zoonotic diseases can easily sprout from them. In conditions of such markets are on the whole deplorable, with multiple, acutely stressed animals stacked into small cages without proper cleaning, that probability is heightened. Just do a simple "Google" to check and see images of these horrid sights yourself.
Another thing is there typical location in the center of crowded cities where foot traffic is heavy, and passersby may frequently touch the animals and the cages, accelerating the passage of viruses from animals to humans. The vendor on duty may be holding a creature to lure customers.
In addition, the wild animals languishing in these terrible markets have probably been poached and imported clandestinely. The collectors and shippers are no doubt criminals robbing innocent creatures, even endangered ones, from prohibited areas. They steal from nature carelessly and treat the terrified beings roughly, packing them into vehicles, containers and ships or rail cars to haul them long distances. They thus enter foreign countries illegally and, of course, without proper shots and quarantine. Anything could happen in this scenario. It is to invite catastrophe as much as it is inhumane.
Finally, it is about time that human societies change their relationships with nature, both plants and animals. We need to treat them better, in an informed and kind way. People need to to conserve nature and protect life and biodiversity.
For all the above reasons, I have been commenting here and there on this topic, mostly on social media and in private conversations, to advocate against the poaching, trafficking and trading of wild animals. I have also made a Facebook page, after being shocked that no-one had done it before.
I am also concerned for livestock on display in traditional street markets. The conditions and treatment of fowl, swine, etc. at these types of places need to be vastly improved in many of them. There should be more space, hygiene, care, respect and sense. They are also sources of viruses transferred from critters to people.