I think new statues of Grant are fine. From
Ron Chernow's biography, which I happen to be reading at the moment:
The publisher Joseph Medill . . . suggested to Elihu Wasburne that Grant submit an expiatory letter to "leading and influential " Jewish leaders as a way of "smoothing the matter over." Grant took personal responsibility, disavowing his wartime order as a thoughtless, misguided action that a moment's reflection might have blocked. To Isaac Morris, who was Jewish, he insisted in September [1868] "I have no prejudice against sect or race, but want each individual to be judged by his own merit." He admitted that General Orders No. 11 "does not sustain this statement . . . but then I do not sustain that order. It never would have been issued if it had not been telegraphed the moment penned, without one moment's reflection." This letter traveled widely in the Jewish community. Grant also sat down with David Eckstein, a Jewish leader from Cincinnati, and convinced him that he regretted his wartime action and was free of any anti-Semitic taint. He told the lawyer Simon Wolf that his wartime order was "directed simply against evil designing persons, whose religion was in no way material to the issue." In the end, Jewish voters across the country forgave and endorsed Grant, who began a systematic effort to atone for his atrocious decision. (p. 620; citations omitted; bolding mine)
Mortified at memories of General Orders No. 11, Grant compiled an outstanding record of incorporating Jews into his administration, one that far outstripped his predecessors'. The lawyer Simon Wolf estimated that Grant appointed more than fifty Jewish citizens at his request alone, including consuls, district attorneys, and deputy postmasters, with Wolf himself becoming recorder of deeds for the District of Columbia. When Grant made Edward S. Salomon governor of the Washington Territory, it was the first time an American Jew had occupied a gubernatorial post. (When Salomon proved corrupt, Grant handled his case leniently, letting him resign.) Elated at this appointment, Rabbi Isaac Mayer Wise said it showed "that President Grant has revoked General Grant's notorious order No. 11."(pp. 642-3; citation omitted; italics original; bolding mine)
Grant also introduced a crusading spirit in protecting Jewish rights abroad, even if it clashed with other foreign policy interests. In the past, such concerns had been criticized as interfering with the internal affairs of other nations. Now Grant set a new benchmark for fostering human rights abroad, growing out of his concern for persecuted Jews. In November 1869, reports surfaced that Russia had brutally relocated two thousand Jewish families to the interior on smuggling charges--an episode faintly reminiscent of Grant's own wartime order. After conferring with American Jewish leaders, Grant resonded in exemlary fashion. "It is too late, in this age of enlightenment," he told them, "to persecute any one on account of race, color, or religion." He protested to the czar while the American ambassador in Russia formulated a state paper documenting coercion against Russian Jews. The New York World professed satisfaction at how superior the Grant was to "that General Grant who issued . . . an order suddenly exiling all the Jews from their homes within the territory occupied by his armies."(p. 643; citations omitted; bolding mine)