Is it ok to say that?
Freedom of expression is an important right. Although protected by the Luxembourg constitution, it comes with duties and responsibilities. There are legally binding limits to respect, with the mission to protect the rights of other persons.
For instance, a transgression of limits would be a call for hatred and/or violence against a person or groups of persons due to a certain characteristic such as:
Gender adaptation / Transgender
Political and philosophical views
Real or perceived belonging to a specific ethnic group or nation.
(Article 454-457 of chapter V of the Penal Code)