On the evening of April 20, the samba tour of Rio de Janeiro Carnival in Brazil kicked off. Earlier, Rio de Janeiro decided to postpone the carnival celebration from February to April due to the significant increase of new coronavirus cases in Brazil caused by the Omicron variant strain. (an actor from a Samba dance school takes part in a carnival parade on Samba Avenue in Rio de Janeiro, Brazil, on April 20.) (this is the float photographed on Samba Avenue in Rio de Janeiro, Brazil, on April 20.) (an actor from a Samba dance school takes part in a carnival parade on Samba Avenue in Rio de Janeiro, Brazil, on April 20.) (an actor from a Samba dance school takes part in a carnival parade on Samba Avenue in Rio de Janeiro, Brazil, on April 20.) (on April 20, actors from Samba dance school took part in the carnival parade on Samba Avenue in Rio de Janeiro, Brazil.) (on April 20, actors from Samba dance school performed on a float on Samba Avenue in Rio de Janeiro, Brazil.) (an actor from a Samba dance school takes part in a carnival parade on Samba Avenue in Rio de Janeiro, Brazil, on April 20.) (Xinhua News Agency)