A group of parents of murdered children demanded Wednesday that Erik and Lyle Menendez not be re-sentenced for the killings of their parents, insisting that they should “do every day” of their original sentences of life in state prison without the possibility of parole.

Erik and Lyle Menendez are expected to appear virtually in a Los Angeles courtroom beginning Thursday for two-day hearing that will examine whether they should be freed.

Attorneys argue that the brothers have worked hard to better themselves and give back to the prison community.