Donald Trump seems to be basing his campaign on two issues -- that the BLM protesters are violent and unruly, and that he is the person who can guarantee the public's safety. But he has a problem -- the voters don't believe him.
Voters prefer Biden on dealing with race relations by a 19 point margin, and think Biden is better for public safety by an 8 point margin. That's not good for Trump -- that the voters are not buying his campaign themes.
In fact, Biden is preferred over Trump on every campaign issue except one -- the economy (and Trump only leads that by a statically insignificant 1 point).
The chart above is from the Politico / Morning Consult Poll -- done between August 28th and 30th of a national sample of 1,988 registered voters, with a 2 point margin of error.