What kind of jurors do jury consultants and thus defense attorneys prefer in homicide cases? Perhaps better not to offend by looking instead at who usually doesn't get selected: College graduates especially those with graduate degrees. The more years you were in college the lower the chance a jury consultant wants you for that jury. Firemen are out as are police officers. They prefer to keep Republicans out and members of the NRA. If you own or have owned several successful companies you won't be selected. If you have a job where you manage a lot of people and need to make difficult decisions everyday, they don't want you and the same goes for human resource officers for large firms.
If you read Scientific American, Nature, Science, The Economist, or International Affairs, you need not worry. I could go on and on. One could argue, perhaps they just don't want to burden these already busy folks? Interesting argument - but it is vacuous. For in fact, as you read the qualities of those that defense wants off the jury, we get a sense for the kinds of folks whom they prefer.
One more thing and this is important, jury consultants don't want leaders on that jury. The Casey Anthony case is just such an example. In this case, the jury was selected from Pinellas County, rather than Orange County (where the trial took place), in order to pick a more unbiased jury. Pinellas County arguably has one of the largest concentrations of retired professionals (doctors, lawyers, accountants, military officers) in the country and yet none made the jury.