If they want more black and white than that, it'd have to be from the man upstairs!

It's like peeing yourself wearing black pants. 

Its not so black and white.

Not to say you don't sometimes need some black and white facts, but you'll do much better in your pitch if you know your subject and can relate your position on a personal basis.

Lots of people there are the old Black Middle Class (think shop owners, or Union guys) that bought those homes during White Flight and have refused to leave the City or let people turn their neighborhood homes into halfway houses, adult foster care,etc. 

None of us local guys are going to open up our black books and give you all the info we had to work hard for.

@Eric Black Thank you.

This is a broad question , not a black and white answer.   

.: black swan events, local socialists implementing rent control, local and federal governments taxing the crap out of landlords, a toxic dump discovered under your property, and plenty of other 'unforseen' surprises.

Black Diamond this month is in Waltham on December 12, there is a write up on the BP events page.