1. (noun) a person who dissents from some established policy

• contestant
• dissenter
• dissident
• objector

2. (noun) someone who participates in a public display of group feeling

• demonstrator

1. (noun) a person who dissents from some established policy

• co
• conscientious objector
• nimby
• nonconformist
• recusant
• political dissident

2. (noun) someone who participates in a public display of group feeling

• counterdemonstrator
• picket

1. (noun) a person who dissents from some established policy

• individual
• mortal
• person
• somebody
• someone
• soul

2. (noun) someone who participates in a public display of group feeling

• crusader
• meliorist
• reformer
• reformist
• social reformer

1. (noun) a person who dissents from some established policy

• differ
• disagree
• dissent
• take issue
• dissent
• dissent
• protest
• protest
• resist
• resist
• dissentient
• dissenting
• dissident
• dissident
• heretical
• heterodox
• object
• protest

2. (noun) someone who participates in a public display of group feeling

• demonstrate
• march
• dissent
• protest
• resist
• protest