Hundreds of protesters gathered Friday to criticize a recent court decision in the Dominican Republic that could strip the citizenship of generations of people of Haitian descent living in the neighboring country.

The crowd peaked at about 2,000 people but thinned out during the march uphill to the Dominican Embassy to protest the decision passed two months ago by that country's court. The demonstrators urged people to boycott travel to the Dominican Republic.

Riot police set up metal barricades on a major thoroughfare that block protesters from reaching the district where the diplomatic mission is located.

The ruling has been met with sharp objection, from Caribbean leaders to the United Nations. On Friday, the Inter-American Commission on Human Rights became the latest international entity to oppose the court decision, calling on the Dominican government to take urgent measures to guarantee the rights of those people affected.

Advocacy groups estimate 200,000 people, many of them of Haitian descent, could lose their Dominican citizenship because of the court ruling. Dominican officials say only about 24,000 would be affected.