Organizers of New York City's annual Gay Pride parade say Bill Donohue, president of the Catholic League, is welcome to participate in this year's celebration.

Donohue, an ardent opponent of gay rights, is pursuing a boycott of Guinness over the beer company's decision to withdraw its support from New York City's St. Patrick's Day parade over the parade's exclusion of gay groups.

(Related: Bill Donohue calls on Catholics to boycott beer companies over pro-gay stance.)

“There is a price to be paid for anti-Catholic bigotry, and that is exactly what is driving Guinness to act,” Donohue said in a press release. “Guinness wants to punish Catholics for holding to traditional moral values, and now they must suffer the consequences.”

Appearing on The Steve Malzberg Show, Donohue said that he was “going to go after Guinness big time, nonstop, relentlessly” because the company is “trying to stick it to Roman Catholics.”

He also announced that he had applied to march in June's Gay Pride parade with a “Straight is Great” banner.

“I'll bring a big wedding cake,” he said.

NYC Pride responded in a press release that Donohue and his group “are free to participate in the 2014 March.”

“His group's presence affirms the need for this year's Pride theme, 'We have won when we're one,'” said David Studinski, march director of NYC Pride. “Straight is great – as long as there's no hate.”