Which of the following is NOT a valid reason for revocation of a concealed handgun permit in Louisiana?

In Louisiana, engaging in a public demonstration against government policy is not considered a valid reason for the revocation of a concealed handgun permit. The other options listed - being convicted of a felony, failing to disclose relevant medical conditions, and carrying a concealed handgun while under the influence of alcohol or controlled substances - are all valid reasons for revocation as they pose significant risks to public safety and the lawful use of firearms. Public demonstrations are protected by the First Amendment, and participating in them does not automatically lead to consequences regarding one's concealed handgun permit status.