In 2015, France and Australia decided to ban the import of all lion heads, paws and skin trophies.
Finally, in December 2015, the U.S. followed suit, increasing protections for certain subspecies of lions across Africa under the Endangered Species Act.
But there's still room for improvement. Many lions, who aren't considered an endangered subspecies, aren't under the protection of the act ... yet.
But many major U.S. airlines have started refusing to carry lion trophies back from these bloody hunts.
People learned what canned hunting is - and they hate it.
Not long ago, almost no one knew what "canned hunting" was. But controversy around trophy hunting after Cecil's death put a spotlight on other abhorrent hunting practices.
People learned of a new twisted kind of horror: In South Africa, people are paying to hunt lions who have been bred and raised (usually by unknowing tourists who have volunteered to help raise them) just to be shot. Often, the lions are put into small enclosures and drugged to make the "hunt" even easier.