I dont  remember  such themed flags as a reason to re elect  Obama for a 2nd term .. seeing all the crying Republicans were doing. About Obama  And all if was made up. Unlike Trumps behaviors 
Not sure if conservatives know Portland doesn't represent the United states  its become  the new chicago rallying cry of conservatives..  and portland is an oddity  it Oregon its self
substantial majority of Portlanders — 74 percent — consider themselves to be liberal on social issues, compared with 35 percent of the rest of the region and 36 percent of the rest of the state.
But like most conservatives they want to spin this elaborate story that what's going on in Portland is tied to some grand national movment of the democratic party .
So places like fox and other conservative  media outlets play the same  loop day after day and have the base convinced its every where 
 
here's a local example of conservatives and Trump supporters over reaction and gullibility,  I have a brother in law who is a rabid Trump fan. Who informs me at a cook out about QAnon.  And how yesterday  Sunday  BLM and Antifa  were decending  on a Trump flag store  and he and others were going to defend the store . At 6pm.  So yesterday 150 Trump supporters  set up shop flags lawn chairs at the closed business majority Mask less no social distancing. . and guess who's  shows up  2  18 years old with homemade signs. Simple masks no hoods no back pack or Antifa markings.  One saying BLM and 1 saying G Floyd Rest in peace..     and in typical Trump support er fashion one guy got in their face screaming   sun tans dont  make you BLACK . Over and over .  I guess he was suggesting  your white you shouldn't be supporting  a different race 
Those 2 young Girls had some  guts for showing up
Ps still haven't seen an explanation on who are these strongman flags   directed at?  Russia  China or Americans who dont support Trump... .?