Partially because "peaceful" and the definition of what would or would not be accepted as valid protest became co-opted by the management/ ivy league class.
Compare the Seattle WTO protests to the 2003-2005 Iraq protests.
On June 1st, 2020, following the events in Lafayette Square, Washington, D.C., a group of veterans became Continue To Serve. Our oath is to the Constitution. Not to one ideal. Not to one religion. Not to one person in office.