Do you believe the Irish hate Britons?
If they do, how does that manifest itself?

As I said, some Irish must inevitably hate Britain if they believe all the lies fed to them as children.
Professor Richardson did. In her case it was manifested as a desire to join IRA.
There is a wide spectrum of ways in which hate can be manifested, and I am not getting in to it.

I said, " generations of school children have been brainwashed to believe Britain should be blamed, keeping hate alive."

That is substantiated by the historians.