Not sure if they are trying to gin up anything. They are there to show protest fucks like Antifa.  The protest was to "End Domestic Terrorism" and Portland is like the hub all the Antifa creatures work from. What a better way to display their facist, violent nature then to protest in their home city. It worked well because Antifa was as fascist as a fascists can be today. They made Germany's brown shirts jealous with their bullshit.  So, if nothing else, America got to see what pricks Antifa really are behind their masks and cowardly bravado.