Nonconformist (noun)

1. A person who does not conform to conventional norms, beliefs, or practices.
2. A person who resists or rebels against prevailing norms, customs, or ideologies.

Origin:

From non- + conformist, from the sense of "one who does not conform to established norms or conventions".

Examples:

1. He was considered a nonconformist for his unconventional views and behavior.
2. She was a proud nonconformist who refused to follow the crowd.
3. The nonconformists of the 1960s were known for their defiance of societal norms and values.
4. Many of history's greatest minds and artists have been nonconformists who challenged the status quo.
5. The nonconformist movement of the 19th century was a precursor to the larger countercultural movements of the 20th century.