Everyone has that right, but posting it here sometimes amounts to cyber bullying IMHO
And that is not warranted--keep your opinions to yourself if it will hurt someone else.
Cyberbullying is the use of technology to harass, threaten, embarrass, or target another person. Online threats and mean, aggressive, or rude texts, tweets, posts, or messages all count. So does posting personal information, pictures, or videos designed to hurt or embarrass someone else.