Joe EskenaziMike Theriault, head of the Building & Construction Trades Council, wants jobs. When does he want them? Now.A crowd of 300 to 400 soggy, hardhat-and-overalls-wearing union men and women -- many of whom, sadly, had no other engagements at noon on a working day -- stood at City Hall Plaza throughout a persistent drizzle for a demonstration today. We know they were there; we saw them. We don't know exactly why they were there because everyone seems to have a different answer to that