Angry in the Great White North

From Martin Sheen's speech:

It’s about time I showed up! (Unintelligible remark about the President of the United States.) I don’t need to tell you how many people are watching what’s happening here on this, what can only be called sacred ground. All over the country, people are watching, there’s a great thaw, there’s a great thaw! And many of -- many of us who have been silent far too long have begun to get behind these women being led by Cindy Sheehan. So, so very proud to be here and so, so grateful to all of you for standing with her for vigiling. It is in the old Irish Tradition that goes back centuries that when you had a rift with the landlord or an authority, you vigiled in front of their homes until they came out and confronted you. And that’s what this is all about in that that great tradition.

Well, that "Irish tradition" is just a sit-in. But specifically, I could not find any reference via Google about a tradition, Irish or otherwise, combining "vigiling" and "landlord".

If anyone can find a reference, let me know, and I'll make an update. I'm curious to compare the details of this specific tradition Sheen is refering to (if it exists) and the Camp Casey protests.