Drag queen and entrepreneur Panti Bliss - aka Rory O'Neill - said she is called a 'paedophile' online every day.
The performer said there is now bigger pushback against gains that have been made since the marriage equality referendum.
She returns to Dublin's Abbey Theatre in her upcoming show, If These Wigs Could Talk.
It is her first time back on the stage, several years after her famous 'check yourself' speech in 2014 ahead of the historic vote.
The speech helped to start the national conversation on same-sex marriage.
However Rory told The Pat Kenny Show he is now facing more online hate than before.
"After the marriage referendum and all that I think I, like a lot of people, thought: 'Oh God, really that's a done deal'", he said.
"It is absolutely a work-in-progress, and I see that more and more as time goes on - there's a bigger pushback.
"Every single day on the internet now somebody calls me a paedophile or whatever.
"That used to happen in the '80s and that all sort of went away, now it's all back with avengence.
"There's definitely a pushback against all of things, all the progress and things we've achieved."
'A kind of superpower'
Rory said if anything this has given him more determination.
"I've been reinvigorated of late, in a way, by the knowledge that you have to protect [what] you've achieved," he said.
"You've got to really stake your claim and hold the line."
On performing, he said he still enjoys it even though it takes more effort.
"It has always been a precarious way to make a living, and also it's a very uncomfortable way to make a living," he laughs.
"The corsetry, the heels and gluing a giant, big nylon hat to your head - like it's bloody uncomfortable and as you get older you feel that more.
"But I still love it and I still enjoy the silliness of it and also, not to sound too serious about it, it's a kind of a superpower or something.
"You put on all this stuff and it makes you a larger-than-life, completely unignorable character.
"I have a sort of armour, and people can say whatever they want to me when I'm in drag and it just bounces off me," he added.
Haunted and If These Wigs Could Talk by Tara Flynn and Panti Bliss run at The Abbey Theatre from November 11th to December 3rd