Today a Tennessee judge can deny bail only for capital crimes; this widens that to a named list of grave offenses. The case for it is plain — keep the genuinely dangerous off the street before trial. The caution, raised on the floor by Rep. Justin Pearson, is that pre-trial detention can fall hardest on poor and minority defendants who haven't been convicted of anything. Both are true. The amendment limits the new discretion to enumerated serious felonies rather than leaving it open-ended, which is the right way to do this if it's done at all.
"For he is the minister of God to thee for good. But if thou do that which is evil, be afraid; for he beareth not the sword in vain."
— Romans 13:4 (KJV)