The government is being urged to prevent organizations devoted to certain views on human nutrition from advocating a diet that includes large portions of uncooked meat, because eating uncooked meat can be very dangerous.
Conclusion
The government is not justified in silencing groups who advocate a diet that includes large portions of uncooked meat, just because eating uncooked meat supposedly can be very dangerous.
Evidence (for)
The government would not be justified in silencing a purely political group just because the group advocates policies that could be harmful to some members of society.
Intermediate Conclusion (should = opinion)
The same should be true for silencing groups with certain views on human nutrition.
Evaluate
This argument works by analogy. Since the government wouldn't be justified in silencing a political group that advocated a potentially harmful policy, the author thinks that the government also shouldn't be justified in silencing a nutritional group that advocates a potentially harmful policy.
Like all arguments by Analogy, we would strengthen it by making the two cases seem more fair to compare.
Goal
Look for an answer that feels something like,
Or pick any answer that otherwise helps us say that the government isn't right to silence the group advocating uncooked meat.