Hunt saboteurs disrupted several shoots in the Yorkshire Dales on the first day of the grouse shooting season yesterday.
Shoots in Wensleydale, Swaledale and Arkengarthdale were targeted.
According to the Hunt Saboteurs Association, more than 100 activities took part in the direct action.
Police were called and a stand-off between shooting parties and the saboteurs took place on several moors.
The action has been condemned by the Yorkshire Dales Moorland Group, with a spokesperson saying the activists ran and shouted obscenities at children who were beating with the shooting parties.
One gamekeeper said: “I was on the Greetes Moor enjoying a family day out with the kids and local farmers.
“We had just lined out for the first drive after lunch when a large group of masked youths jumped over the fence and started running towards our kids, which you can imagine was terrifying for them.
“Once close enough, torrents of abuse were thrown at us so we quickly packed up and left the moor.
“Once the beaters were back in Woodhall, the poor kids were met with another wave of abusive masked thugs who were also shouting and gesturing to random passing cars.”
The Hunt Saboteurs Association said in a post on its website: “We found our first driven shoot located above the village of Healaugh on Reeth Low Moor.
“A stand off ensued whilst the shooters called in the police and we held them there for several hours and monitored them for the rest of the day.
One gamekeeper said several vermin traps were found to have been destroyed after the activists left yesterday.