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Topic
- Labor unions40
- Boycotts23
- Agricultural laborers22
- Hispanic American agricultural laborers18
- Grapes10
- Grape industry8
- Radio stations8
- Hispanic American mass media7
- Lettuce industry4
- Strikes and lockouts4
- Labor leaders3
- Elections2
- Law and legislation2
- Organizing2
- Political activity2
- Public radio2
- Anniversaries, etc1
- Civil rights1
- Civil rights demonstrations1
- Educational radio stations1