WTF??? Getting frustrated? Anxiety & apprehension levels rising along with emotional rants??? Careful not to trip over D_ _Ks. Just saying what you posted on here a few days ago.
According to wikipedia It defines tear gas as a chemical weapon that causes severe eye & respiratory pain, skin irritation, bleeding & blindness in the eyes. It stimulates the nerves of the lachrymal glands to produce tears.
According to Prevention.com/health, flash bang grenades can be dangerous even though they are classified as non-lethal. Can cause hearing loss & eye damage. Has the potential to reach 175 decibels when detonated & could cause hearing loss if it hits near you, According to Dr Ashley Larrimore, MD who is also an ER physician @ The Ohio State University Wexner Medical Center. For comparison, a jet engine can easily reach 140 decibels.
I repeat, these weapons were used on leftist demonstrators & the Portland police gave right wing groups a safe passage.