He (Mayor Ron Paull) said he’s never opened the book. But he did not condemn her actions and urged everyone to respect and welcome each other’s views.

The culture of tolerating intolerance ....

The paradox of tolerance states that if a society's practice of tolerance is inclusive of the intolerant, intolerance will ultimately dominate, eliminating the tolerant and the practice of tolerance with them
https://en.wikipedia.org/wiki/Paradox_of_tolerance

Both my parents attended Residential school in northern Ontario in the 1950s and they were absolutely devastated by it.

Anyone that disagrees, dismisses or disregards that history is ignorant of the past and is willing to repeat again it in their favour.