The Terrorism Confinement Center (CECOT) prison in Tecoluca, El Salvador, on March 11, 2025. Some right-wing political candidates in Latin America have vowed to build “megaprisons” in the style of El Salvador, whose president, Nayib Bukele, is among the region’s most popular leaders. (Fred Ramos/The New York Times) By EMMA BUBOLA, ANNIE CORREAL and ANA IONOVA Dancing, beating his chest and hugging Flávio Bolsonaro, the right-wing candidate seeking to become Brazil’s next leader, President…