As @Rustbelt_Dem just reminded me, RFK Sr. did serve as an aide to McCarthy's Senate committee. So take any sainthood with a grain of salt. But perhaps he evolved by the time of his death. However, his son? Ugh.
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@LiberalLibrarian @Rustbelt_Dem He did change a great deal by the late '60s. Some of that was consciously tactical. But I think a good deal was real.