A childhood belief about teachers

When I was in Primary School I had a teacher that all of knew didn't like kids or for that matter being a teacher. One day he came in and said: hand up all the Catholics in the class(3 x put a hand up) and he told us 8 year olds that we were to blame for all the murders and killings in Northern Ireland. I went home from my school in Australia and asked my parents when the Hell were they in Ireland and why had they never told ME that they had traveled abroad let alone murdered people for nothing. This same teacher's measurement class involved him coming and slamming books down saying "there are 12 inches in a foot" Later he just said" "there are three feet in a yard" and i spent a whole weekend pacing out our back-yard trying to work the statement out because there was definitely MORE than three foot(lengths) in my yard alone - let alone the houses with biogger yards!!! I even tried wearing my father's shoes when measuring things out as the teacher's calculations might have been done with 'grown-ups' shoes on