The British farmers protests - explained

In the UK, farmers are protesting in a way they haven't in recent times. They are furious about proposed inheritance tax changes to be brought in by the Labour government. The government claims the changes will only affect a tiny minority. The national farmers union claim they have got their numbers wildly wrong. Who's right - and is there a better answer already put forward that, so far, both sides are stubbornly ignoring? And will this represent a critical moment in uk politics as rural communities begin to push back on the newly elected government? Let's discuss.