I am still unclear as to why the Good Friday Agreement will be 'ripped up' because of the Leave vote.
The peace agreement is between ROI, NI & Westminster.
Well, the point was nothing would be imposed by Westminster than Dublin didn't agree with - it was all either localised decisions made in Stormont OR came from the EU so therefore was agreed to by Dublin by default.
We already have talk of the British Bill of Rights creeping in to replace the Human Rights Act in parallel with Brexit.
This means that anyone living in NI would be subject to laws imposed by Westminster. Irish citizens living in NI would have different rights to those living in Ireland.
If you take into context that Irish Catholics have been treated pretty badly by British law over the years and human rights have been somewhat curtailed at times, its pretty alarming to hear that a) Brexit is being imposed against the wishes of the local population despite the fact that the Good Friday Agreement is supposed to prevent huge decisions not taken in parallel with Dublin b) that this could mean Human Rights which are underpinned by the GFA are not only at risk from the agreement going but the government is actively talking of replacing them with a British Bill of Rights - therefore being a second things imposed by Westminster - a government they don't recognise.
The issue is that the Good Friday Agreement was already a compromise by Irish Republican. This is now being treated as if it was meaningless and the government are going to impose things that go far further than they ever would have agreed.
In terms of law, precedents are the big thing - so imposing one thing leads to another, and another and another. And they are already talking about the one that perhaps is the one that protects citizens of both nationalities equally and is therefore very cherished.
For someone who is Irish Catholic the idea that this might lead to them being disadvantaged or second class citizens who do not have to be listened to is one that history has held true through treatment by the Westminster government.
And Brexit, really is doing exactly the same thing.
So guess how its all viewed?
Its not going to go well.
As for Ireland. They simply can not have a bilateral agreement on many of the key issues - most notably trade - because they are not able to make bilateral agreements that only apply to them as an EU member. They have to go through the EU and the other 26 members have to agree to trade deals and they have to be equal for all members.
In terms of freedom of movement, if the UK are talking about ending it, then EU nationals in Ireland would be subject to it - and there could be issues over work or if for example you are an Irish citizen living in the NI, and meet a partner in the south who is from the EU. You would have the same rights as an Irish citizen living in the South married to an EU national. (see where it starts to get complex).