the officer has been charged with first-degree murder for killing lakan mcdonald.the police say he refused to drop a knife with the crowd chanting "16 shots." andy, take us through in a little more detail, programs, exactly what happened. these events took place in 2014. >> right, that's the big problem that protesters have with all of this, really. why did it take so long, over a year, for this officer to be charged. the main prosecutor said that they just wanted to get it right, but protesters are not buying it. in fact, jonah, they have a big protest planned for this friday. they say they want to target the money on committee, on black friday, the biggest shopping day of the year they're going to be protesting through this corridor. they want people to know that they want this main prosecutor fired from her job because of the length of time it has taken to prosecute. they want the main police chief booted out of his job as well. the police chief say that things have changed for the better in chicago. and they're trying to do their job as thoroughly as possible.