Collective nouns are nouns that represent a group.
Use the singular when the the group works together as a unit.
Plural applies when the members of the group are acting individually.
1.The government do not not always provide subsdies for poor farmers. -- The provision of subsidies is a collective decision, not individual.
2. The crowd is/are getting restless with every passing minute. -- In my opinion, both forms work here; however, I am inclined to regard crowd more like a unit in the sentence.
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