He always sticks with 'the herd'. [=he always does what other people do; he does not think for himself]
We had to 'ride herd on' them to make sure they completed the work on time.
A 'herd' of shoppers waited anxiously for the store to open.
(..) We need these. And we need to get the cars back in front of the onramp. They'll know we took their explosives, so does it matter? - We want that herd to stay on the highway. - Why? We may need it. Okay. Tara, Carl, come on! Rick... All right. (..)2017 TvShow: The Walking Dead Title: Rock in the Road Season: 7 Episode 9
(..) Wait. When I was hiding in the back of the truck, I heard a couple of them talking about this. This is for a herd. That's why it's a steel cable. It's not just for one walker. It's for a lot. We need these explosives. Yeah. (..)2017 TvShow: The Walking Dead Title: Rock in the Road Season: 7 Episode 9