I ALWAYS believed we would win, but I didn’t expect to cry.

The Supreme Court’s ruling on Friday, that the Constitution guarantees gay people the freedom to marry, is a monumental and inspiring victory. America got it right. Love won. We all did.

That, indeed, is something to celebrate. And now we must get back to work.

Securing protections from discrimination for gay, lesbian, bisexual and transgender Americans needs to be our priority. In too many parts of the country, people can still be fired, evicted, refused service or even humiliated at stores or restaurants because of their sexual orientation or gender identity — in other words, just for being who they are.

The threat of discrimination also hurts productivity, undermines teamwork and, as Apple’s chief executive, Tim Cook, has noted, keeps too many talented employees from bringing their whole selves to work. These harms are not theoretical. The Williams Institute at U.C.L.A., which studies gay issues, found that 27 percent of all lesbian, gay or bisexual workers reported on-the-job discrimination and that 7 percent have lost jobs because of their sexual orientation.

A study by the National LGBTQ Task Force and the National Center for Transgender Equality found that 90 percent of transgender workers surveyed said that they had faced discrimination or harassment in the workplace. Nearly one-fifth of transgender Americans surveyed reported being refused a home or apartment and 11 percent have been evicted because of their gender identity.