Emancipation Day (Puerto Rico) To celebrate Emancipation Day, Puerto Ricans learn to dance the dances known as plena and bomba. Many will study their history and honor famous black Puerto Ricans. Throughout the entire country, citizens get together to dance, sing, eat, and remember the painful past that slaves had to go through to celebrate this holiday. Emancipation Day is celebrated on March 22, 1873. It is celebrated because this is the day that slavery became illegal in Puerto Rico. Slavery becoming illegal is very important. This Is a start that helps eliminate unfair treatment of different races. Slaves were hot branded so that everyone would know they came to Puerto Rico legally. Treatment such as this should never happen no matter what race someone is. This shows how terrible slavery was and the importance of it needing to be stopped. termina trato injusto hacia las personas que no merecen este tipo de tratamiento. Todo el mundo necesita celebrar su libertad. Este día es muy honroso para todos los esclavos. La celebración es lo que hay que hacer.