What to do in a similar situation?
Practical advice: in such a situation, it is useful to take photo, video or audio recording of the conversation with the nightclub guards, what other people are or are not allowed to enter, as well as write down the contacts of possible witnesses who could confirm the facts of the possible violation.
If a person suspects that she/he is denied a public service because of skin colour, ethnic or national origin, as well as gender, age, disability, sexual orientation, etc., then the person has a right to complain to the Ombudsman’s office or the court. The ombudsman can initiate an inspection case and, upon finding a violation of the prohibition of discrimination, the Ombudsman can recommend to prevent and end the discriminatory practice. On the other hand, if a person submits a case to the court, upon receiving a recognition of a violation of the prohibition on discrimination, the court can order to receive compensation for non-material (non-pecuniary) harm.
If you ever suspect a discrimination when receiving or being denied to receive a publicly availale service, you can always consult at the Latvian Centre for Human Rights or the Ombudsman’s Office.