Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE users (role_description VARCHAR, role_code VARCHAR, user_login VARCHAR)
TABLE: CREATE TABLE ROLES (role_description VARCHAR, role_code VARCHAR, user_login VARCHAR)

### Question ###
Find the description of the most popular role among the users that have logged in.

### Accurate SQL ###

SELECT role_description FROM ROLES WHERE role_code = (SELECT role_code FROM users WHERE user_login = 1 GROUP BY role_code ORDER BY COUNT(*) DESC LIMIT 1)