They proudly sing that each one of them is unified with another hard-core group of supporters.

But unlike hard-core paramilitary groups, it does not emphasize military tactics.

A hard-core group of players was still in a basketball state of mind.

A hard-core group that played a caustic kind of punk, the band had a cult following of mostly angry young men.

There was a hard-core group of members like me who came nearly every day, and we had gradually gotten to know each other.

"But this industry includes a lot of mavericks all over the country, and a hard-core group will manage to grow out of what happened."

"Our next wave of lawsuits and the ones after that will target the hard-core group of outlaws."

There was also a small hard-core group of demonstrators intent on having a confrontation with police.

"There was a small hard-core group of collectors were were serious buyers."

A small hard-core group keeps a 24-hour vigil at the site, blocking traffic at the central intersection.