Final Answer:
Those who relegated the speaker to "eat in the kitchen" will be ashamed in the future because, as the poem suggests, the speaker's resilience and persistence will lead to a significant societal change. The evidence lies in the speaker's assertion that "Tomorrow, / I'll be at the table," indicating a shift in power dynamics and a future where the speaker's voice and influence will be recognized and acknowledged.
Step-by-step explanation:
The speaker's defiance against being marginalized to the kitchen and the confident assertion of being at the table "Tomorrow" suggest a future where the speaker's contributions and significance will be acknowledged. The shame of those who marginalized the speaker is implied in the anticipation of a transformative change in societal attitudes.
The evidence supports that the shame is related to a future transformation in societal attitudes and recognition of the speaker's significance.