title: Find all users and update them at once
body: <p>is there a way to find all users and update them at the same time?</p>
  
  <p>This code works with findOneAndUpdate or findByIdAndUpdate, but only remove the record from one user. </p>
  
  <p>I need to remove the objects inside "topicsfollowed" that match the (req.params.id) from all users at the same time.</p>
  
  <p>Thanks in advance.</p>
  
  <pre><code>User.find({}, { $pull: {topicsfollowed: req.params.id}}, function (err){
      if (err) {
          console.log(err);
          res.render('index.ejs', { errors:errors });
        }
        res.send('Success')
    })
  </code></pre>