Karen got mad when she heard that Juan was taking legal action against her, and so she took to social media to retaliate. She posted Juan's full name on her Facebook and told her friends that he was a "creep" and a "pervert". She said that he was spying on her teenage daughters and video-recording then. She said that he lived on his own because he was a predator. 30 friends of Karen commented on her Facebook post, and the comment was liked by over 100 people, including the local Canada Post mail delivery person, the local realtor, three local lawyers, and a journalist. The journalist contacted Juan and asked him for a comment.

Can Juan sue Karen? What type of claim can he make and what type of relief can he seek? What are the damages he could demand?

write the answer in 250-300 words.