In a series of columns, Chronicle columnist Lisa Falkenburg has documented a variety of problems with the current system, including cases where police sat on grand juries that decided investigations involving police among other issues. Whitmire said the change is needed to restore the confidence in Texas' grand jury system, especially in light of riots in Ferguson, Mo., and other cities to vent anger over decisions of grand juries -- much of it in minority communities. [...] the drama, that bill passed both chambers with almost no debate.