SPRINGFIELD — The Illinois Supreme Court on Tuesday looked at whether a 50-year sentence given to a 16-year-old is unconstitutional.In the case, People v. Dimitri Buffer, a teenager was convicted on four counts of first-degree murder. He received 25 years imprisonment for murder and 25 more for the use of a firearm. Now the Illinois Supreme Court is tasked with deciding whether putting a teenager in prison for 50 years without a chance for parole amounts to a de facto life sentence.After Buffer’s sentencing …