The violence is far more the legacy of the far left, who tolerated and cheered Antifa and BLM rioters, while defunding police departments and demonizing police.
To blame it on Trump is to be blind (or sadly lacking in reliable sources of information).
Trump has done some bad things - his election defeat denialism, primarily. But he is not behind the violence.
Look inward, progressives, and you will see the real cause.
And it isn't guns. It isn't gun culture (which is not where the violence takes place). It is progressive policies, and progressive governance.