Omar, a Democrat, shot back that Trump was “spewing fascist ideology,” and Republicans expressed alarm that the inflammatory chant, building off of provocative tweets and statements by Trump, might become a theme of his 2020 re-election campaign.
“We cannot be defined by this,” said conservative Representative Mark Walker, who added that Republican leaders in the House of Representatives discussed the potential political risks at a breakfast with Vice President Mike Pence.
Source: Trump disavows ‘send her back’ rally chant, many Republicans alarmed – Reuters
61chrissterry 
So Trump says he disagrees with his supporters who made the chant, but does he, for he did nothing at the rally to stop it. In fact by his non-action he was encouraging it.
To say later he disagrees is too late and may be just for the media, but not what he believes.
By all his rhetoric at rallies and his actions and non-actions he appears to go along with it and thereby is encouraging his supporters to go further.
Should anyone of these four Democratic Representatives be injuried or even killed, this will be at Presidents Trumps door.
Also this will be so with regards any Republican Representatives or Senators who do not fully denounce this by the Trump supporters and the President himself.
This is not a ‘fence sitting’ situation for actions or non-actions will be taken into account and all you do not denounce at the earliest opportunities will be guilty by association.
If Trump is not denounce them America will suffer and the Constitution will count for nothing.
For it is my belief that Trump would, if he could, remove the Constitution which would allow him to act and rule how he wishes, which is by some form of dictatorship, on the lines of those whom he holds high, being President Vladimir Putin of Russia and Kim Yong-Hu of North Korea
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