I saw somebody on the telly (discussing Windrush) wearing a top with the slogan 'no blacks no dogs, no Irish'.
This might be a poetic truth in regards to racism but I looked into it. Apparently the Centre for Irish Studies at London Metropolitan University has one single example of this slogan used by a landlady in Blackpool.
There were a number of 'no Irish' additions in turn of the 19/20'th century newspaper adverts for domestic service, ironically many of them in Dublin!
Those who say they well remember these slogans are to an extent perpetuating an Urban Myth.
However for the representatives of the UK media or Parliament to now try to somehow blame the Irish for their own brexit impasse, a group who had no say in the matter, and to suggest that somehow the Irish have been doing it and been belligerent for years against the 'English', is manna for the new wave anti Irish racists.
Brexiters updated slogan might read 'we want no Irish, because we have no ideas and take no responsibility'.