In 1974, The American Human Association started Adopt a Cat Month (June, of course.)
Not everyone wants to or should adopt a cat, but there are a lot of kitties out there who need good homes, despite the best efforts of many people to keep them safe and keep the population down. A lot of people believe that cats should be allowed to run wild outside, which contributes to the problem of cat nuisances, unwanted and feral kittens, and the number of cats whose lives are shortened by vehicles, bullies, or coyotes or other natural predators.