Depends entirely on the situation. Does your pepper spray have the range to take down the person? Will it render him "harmless" to you so you can end the conflict?
However there are non-lethal bullets that can be used that will have the range to knock him out at range. Trouble with revolutions is, do you want the revolutionary to still be alive to continue revolting after he gets back up? Will reducing the number of revolutionaries help your government, or will it create a martyr?
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