To amend title 18, United States Code, to provide penalty enhancements for committing certain offenses while in disguise, and for other purposes.

Unmasking Antifa Act of 2018 This bill amends the federal criminal code to make it a crime for an individual, while in disguise, to injure, oppress, threaten, or intimidate a person: (1) who is exercising or enjoying a protected right or privilege, or (2) because the person has exercised a protected right or privilege. A violator is subject to criminal penalties—a fine, a prison term of up to 15 years, or both. Additionally, the bill establishes an enhanced penalty—a mandatory two-year prison term—for a person who wears a disguise during an offense involving the willful and malicious destruction of a building or property.