The Jap farmers and students objecting to Narita Airport used to do things like this It made Narita a bit like the Berlin Wall. Over the years that nonsense died down a bit. All seemed rather splendid fun- we had warnings that balloons may be released in front of us on the approach. I think it's all over now and it's just another airport. I have no doubt that if another runway is built at LHR (like it's not needed?), we will have all these Nimbys enjoying themselves rioting and firing off balloons and rockets at the aeroplanes and knocking coppers' hats off, except for Benefits Day when they will all decamp to buy their alcohol and drugs. All part of life's rich tapestry.
What was the question again?