Trump calls for "law and order" is nice and all, especially since it meshes well with his campaign promise, but what about addressing the long standing issue that underlies this recent outbreak of violence?  He doesn't strike anyone as someone who shies away from historic issues like white supremacy.  For example, his complete reversal of environmental policy or current rhetoric with NK.
Normally I'm one of the first to point out that absence of evidence is not evidence of absence but judging a person by their conduct includes inaction.  In Trump's case, especially since allegations of bigotry, exploiting the alt-right movement, etc. that was part of his campaign and with Bannon included in his administration I think there is room to argue that Trump is avoiding addressing the root of the problem because doing so would likely alienate part of his base if not for more deplorable reasons.