An anti-abortion advocacy group decorated Hornbake Plaza with graphic images on signs and on a jumbotron.
Will Witt was promoting his book "How to Win Friends and Influence Enemies: Taking On Liberal Arguments with Logic and Humor."
The march was organized by two Annapolis High School students.
Students remembered England as a mentor and devoted ally.
Protesters in Maryland joined others in state capitals such as Austin, Texas, and Carson City, Nevada.
Walsh spoke against same-sex marriage, abortion and transgender people.
The resolution received a vote of 30-0 with two abstentions.
The bill, which aims to protect students from hate speech, passed 28-0 with 1 abstention.