Some adjectives are used as nouns to describe groups of people. Each of these groups follows the determiner the (definite article). There are the blind, the deaf, the elderly, the homeless, the old, the rich, the sick, the young, etc.
The nouns are used in the plural and the verbs that follow them must therefore be plural
Sometimes, the noun is a singular
- The accused is found guilty.
- The deceased was believed to have killed himself.