Cauhtemoc Cardenas said during a news conference on 7 June that the visit to Mexico by Salvadoran president Alfredo Cristiani is a visit by "a repressive ruler who oppresses a large sector of his people."
Cauhtemoc Cardenas made these comments about Cristiani in front of news reporters. 
The statement is correct because Cardenas spoke at a news conference, which is attended by people who report the news. The wording is probably what fooled the system. 