Who was the first player sent off during a soccer match?

Context: This is a list of all occasions where a football player was sent off from a FIFA World Cup match due to a foul or misconduct, either as a direct expulsion or as a second caution within the match.

This list includes all dismissals since the first World Cup in 1930. The use of physical red and yellow cards to respectively indicate dismissals and cautions is a later invention, having been introduced at the 1970 tournament.

Only players are listed, even if they were at the substitutes' bench at the time of the sending off. Managers and other technical staff members are not covered.

Statistics
Plácido Galindo was the first player to be sent off in a World Cup match, playing for Peru against Romania in a 1930 match officiated by Alberto Warnken. Although physical red cards were introduced from 1970, they were not put in practice until the 1974 World Cup, when referee Doğan Babacan sent off Chile's Carlos Caszely during a match against West Germany.
Two players have received red cards twice: Cameroon's Rigobert Song and France's Zinedine Zidane.
Five dismissals have taken place during final matches: Argentina's Pedro Monzón and Gustavo Dezotti, France's Marcel Desailly and Zinedine Zidane, and John Heitinga of the Netherlands.
Uruguay's José Batista received the quickest red card, in the first minute in a game against Scotland in 1986.
A few expulsions either took place after the final whistle of the match or were awarded to players at the substitutes' bench, and thus did not reduce the number of players on the pitch during the game. Two of them, that of Leandro Cufré of Argentina and that of Denzel Dumfries of the Netherlands, took place after the penalty shoot-outs of knockout matches, making them the latest red cards.
Three goalkeepers have been sent off in the tournament: Italy's Gianluca Pagliuca, South Africa's Itumeleng Khune, and Wales's Wayne Hennessey.
The match with the most dismissals was Portugal vs Netherlands of 2006, when referee Valentin Ivanov dished out 4 red cards, 2 for each team.
The referee who has sent off the most players is Arturo Brizio Carter, 7 red cards, in 5 different matches.
The team that has the greatest number of expulsed players is Brazil, with 11 – in 9 different matches, a record shared with Argentina. The team whose opponents have received the most red cards is Germany, with 20 – in 18 different matches, also a record.
The 2006 World Cup had the highest amount of red cards: a total of 28 players were sent off.

Answer: Plácido Galindo was the first player to be sent off in a World Cup match, playing for Peru against Romania in a 1930 match officiated by Alberto Warnken. Although physical red cards were introduced from 1970, they were not put in practice until the 1974 World Cup, when referee Doğan Babacan sent off Chile's Carlos Caszely during a match against West Germany.