Slop.

these kulaks also perpetrated the holocaust in Ukraine as soon as they had the chance.

Where did you read this? It sounds very plausible but I am having difficulties locating citations.

ETA:

Tsybul´skii was the son of a “big kulak” who had been exiled by the Soviets. In November 1941, he signed, apparently without hesitation, an agreement to serve in the police that contained an oath to fulfill all orders, on penalty of death.⁶¹ His deputy during this time was Grigorii Tsibukh (or Tsibuk), another son of a dekulakized and exiled peasant.⁶² He, too, used to brag of his hatred of Jews, of whom “he would willingly kill 50 to 100 a day.”⁶³

Aleksandr Roshko, mentioned above, had been denounced as a kulak himself. Roshko was arrested, tried, and sentenced to imprisonment at least once, possibly several times, by the Soviets and reappeared in Vradievka in 1941.⁶⁴ He, too, harbored strong resentment against the Soviets and shortly after his appointment as pretor in the fall of 1941, he addressed the crowd: “Soviet power used to mistreat me, put me in prison, and now I can live freely.”⁶⁵ He once referred to the killing of Jews as a “cur’s death for a cur.”⁶⁶

It thus appears that the members of this criminal gang who massacred thousands of Jews and rode roughshod over local Christians for more than three years had similar experiences under the Soviets and developed strong resentment against that régime, which they identified as “Jewish.” They closely associated themselves with the cause of the Axis powers and heavily invested in the anticommunist and anti-Jewish crusade.

(Source.)

If this wasn’t the source that you had in mind, I’d still very much like to see where you learned about antisemitic kulaki.