According to CBS News / AP, "approximately 230 protesters" were arrested on Inauguration Day and they will be "charged with felony rioting" - an offense punishable "by up to 10 years in prison and a fine of up to $250,000."
President Trump should consider pardoning the non-violent offenders among them. He should even consider pardoning them preemptively (before conviction, or before execution of sentence) just as Woodrow Wilson pardoned female suffragists who picketed the White House back in the day. Of course, some of those arrested do not fit the "non-violent" category neatly.
... Windows of downtown businesses were smashed, and police deployed pepper spray and “sting balls” against the crowd.The protesters were armed with crowbars and threw objects at people and businesses, destroying storefronts and damaging vehicles. Six police officers were hurt -- three of them hit in the head with flying objects ...Trump should pardon the offenses and remit any associated fines. He need not worry about any embarrassment re rejecting or refusing such pardons because no one has a "right" to spend time in prison on the dime of tax payers. If anyone insists on giving money to the government, they can make a charitable donation. See full story here.