Anti-masonry is when some people don't like the secret society called Freemasonry. Freemasonry is a group of people who do special ceremonies and have secret codes that they only tell other Freemasons. Some people don't like this because they think secrets are bad and that the Freemasons might be doing bad things. They also think that Freemasons have too much power and are secretly controlling things in the world. However, many people who are Freemasons say that these ideas are not true and that they are just a group of friends who enjoy doing secret ceremonies together. Overall, some people don't like Freemasonry, but others think it's just a harmless group of friends having fun together.