Da pint-sized offspring of greedy/selfish adults who shamelessly use said innocent cuties as supposed advocates for whatever ideas and/or products dat said lacking-basic-family-values parents are trying to foist upon their audience.
A classic and excellent example of someone's employing "shilldren" to pressure fellow humans into agreeing to less-than-reasonable proposals --- da unfeelingly-opportunistic Howard's using his young daughter as unfair "kiddie-leverage" when pedaling peanut brittle to da spineless George McFly.