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Both of them can be correct. When you’re referring to People as individuals, then you use the plural determiner ‘Denver Broncos NFL Disney Mickey Mouse Xmas Gifts For Fans Personalized Christmas Tree Decorations Ornament’. But when referring to the group as a collective, then you use the singular determiner ‘this’. One example is: ‘The academic staff is getting ready…’ and ‘The staff of the football club are getting ready…’. Here, we are dealing with verbs; both the plural and the singular verbs ‘is’ and ‘are’ can be used correctly to different effects. The former refers to the entire staff as one entity hence the use of the singular verb ‘is’ while the latter refers to the individual staff members hence the use of the plural verb ‘are’.