Trump obviously is stung by criticism that his often-reckless rhetoric has exacerbated the angry divisions in our country. His daily assaults on the First Amendment, on law enforcement and (from where I sit) on compassion and decency itself, have played a major role — if not THE major role — in our poisonous political environment. The identity of the person(s) who mailed pipe bombs to numerous Trump critics remains to be seen, but there’s little argument (among those other than Trump’s most-blinkered supporters, at least) that he has played a significant role in making something like this seem OK to certain individuals. And no one should for a second expect him to accept even an atom’s worth of responsibility for that.
UPDATE: An arrest has been made.