Disability Cornwall today led the calls for Mr Brewer's resignation.
Theresa Court, advice services manager, said:
I remember him (Mr Brewer) coming over and asking what the stall was about.
I was explaining to him about the parent partnership service when he said disabled children should be put down.
He said they cost the council too much money.
I felt physically sick. I was there with parents of disabled children at the time and I just had to turn my back on him.
He is supposed to be an elected member representing public views and acting on behalf of the public.
How anyone can come out with that is just shocking.
More top news
President Trump has scrapped protections for transgender students that had allowed them to use bathrooms matching their gender identity.
Prisons will be expected to reform prisoners as well as punish them under new proposals, set to be unveiled on Thursday.
Younger workers are missing out on pay rises, with people born in the 1980s earning £40 a week less than those 10 years older, studies show.