As an English person in England I can only agree. The lack of knowledge about the situation in Ireland, current and historical, is abysmal. I doubt many young people even know about the bombings in their own country, let alone what led to it.
The question of the border in Ireland and what will happen when the UK leaves the EU has been kicked around as political football with very little regard given to the human consequences. Politicians have taken their cue from public apathy and committed some really egregious intellectual dishonesties.
It's all so shameful.
There have also been very real consequences of that lingering political resentment. For years, Irish Americans from Boston and NY were the primary source of funding for the Irish Republican bombing campaign in Britain.
[1] http://www.washingtonpost.com/wp-dyn/content/article/2005/08...
There is no lack of continuity though. In 1609 the English stole land from Irish people during the plantation of Ulster. In 2019, the six counties vote to stay in the EU, but the Monarch's parliament across the sea decides otherwise. A garrison of the occupation troops remain in the Thiepval barracks.
Six county Brexit (against the will of six county voters) and the Thiepval barracks are a sign of a continuity that is very current but unfortunately not very local.
And the Troubles are much nearer in time than the famine. There is a continuity of conflict you haven't had in South Boston compared to what was going on in Ireland.
(Besides, not wanting to single you out, but I'm sure we could find many prevalent unhealthy resentments present in Americans in general, rooted in historical events.)