Final answer:
The government can best guarantee the right to a fair trial and freedom of speech through measures such as a speedy, public trial by an impartial jury, protecting freedom of speech in public forums, and implementing due process rights for the accused.
Step-by-step explanation:
The government can best guarantee the right to a fair trial and freedom of speech by implementing certain measures.
Firstly, it should ensure that individuals have the right to a speedy, public trial by an impartial jury. This protects people from being detained indefinitely.
Additionally, the government should protect freedom of speech by allowing individuals to express their unpopular views in a public forum, as long as it does not incite violence or harm others. Finally, the government should safeguard the rights of the accused by implementing due process, such as advising individuals of their rights upon arrest and providing access to legal counsel.