Here you can find the contribution of the Centro Sinodal de Ensino Médio Dorothea Schäfke. It is written in English.
In our opinion, the definition of a Christian goes beyond being baptized in a Catholic church. Being a Christian means following the principles espoused by Jesus Christ. Being a Christian is honoring your father and mother, not to kill, not to betray, not to steal, not to lie, spread love, and always try to do good to others.
Being baptized and go to a Catholic church is easy, but follow the principles above is what defines us as true Christians.