Proselytizing is the practice of attempting to persuade or change someone's opinion. It is used primarily to refer to evangelism, but 'deconversion' attempts and nonreligious persuasion (to a political party or other institution) also fit the definition.
Most Christian groups do missionary work, which generally includes proselytism. Groups particularly noted for proselytizing include:
- Jehovah's Witnesses
- The Roman Catholic Church
- Born-again Christians
- Jews for Jesus
- Southern Baptist Convention
The First Amendment to the United States Constitution guarantees both freedom of speech and freedom of religion. Proselytism is legal under both of these provisions, but only to the extent that the potential convert's rights are not infringed upon.