By WBZ CBS Boston

With rainbow flags and bright colors, tens of thousands of people marched with pride and concern Saturday in the 48th Boston Pride Parade.

Boston Mayor Marty Walsh marched the two-mile route through the Back Bay and South End with the U.S. Council of Mayors and 300 different organizations.

This year’s theme of “Rainbow Resistance” reflects opposition to new and rising threats against the LGBTQ community, including a November ballot question asking voters whether to keep or repeal the state’s 2016 anti-discrimination law.

”There’s a lot mayors here proud of gay rights and fighting for it and they are proud of what we are doing here in Mass. and we are offering support to any mayor who needs help,” Walsh said.

Senator Elizabeth Warren and singer-activist Melissa Etheridge also took part in the parade.

Warren said this will be the first statewide referendum on transgender rights and repealing the decision would be a step in the wrong direction.

“It means Massachusetts would embrace prejudice, ugliness and fear. We are not going to repeal our transgender bill and we are going to stand up for what is right and what’s important to Mass,” Warren said.

Casey Suffredini is with Freedom For All Massachusetts, a bipartisan coalition to uphold the transgender non-discrimination law in November.

“As for me personally as a transgender man even walking down the street I can be discriminated against,” Suffredini said.

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