JACKSON, Miss. — Mississippi supporters of lesbian, gay bisexual and transgender rights protested Sunday, saying they’re not giving up their fight against a state law they call discriminatory.

The law, which takes effect July 1, is to allow religious groups and some private businesses to deny services to same-sex couples and transgender people.

More than 300 people marched from the state Capitol to the governor’s mansion in Jackson, trying to keep up pressure on Gov. Phil Bryant and other Mississippi leaders who support the law.

Chad Griffin, president of the Human Rights Campaign, says the gay-rights group expects businesses, movies and entertainers will increasingly refuse to do business in the state.

Bryant and other supporters say the law reinforces the First Amendment guarantee of freedom of religion. They say opponents are overreacting.