Update:
Following a one month loss of launch capability, from Spaceflight Now, April 25, 2017; Operations resume at European-run launch base in French Guiana:
Protest leaders demanded more 3 billion euros (USD 3.3 billion) in emergency funding to improve conditions in French Guiana. The final agreement signed Friday calls for 1.1 billion euros (USD 1.2 billion) of immediate aid, and a “priority review” of another 2.1 billion euro (USD 2.3 billion) funding package.
After one or two re-schedulings, Arianespace has postponed the launch of Flight VA236 with SGDC and KOREASAT-7 "indefinitely". The rocket is blocked from rolling out to the launchpad a roadblock as part of a protest.
According to the BBC's news item Spaceport protest delays rocket launch in French Guiana:
The Ariane 5 rocket was due to take a South Korean satellite and a Brazilian satellite into orbit later on Tuesday.
But the booster could not be rolled to the launch pad because of the protest at the Guiana Space Center over what workers for energy company EDF said were "deplorable working conditions".
The launch has been moved to Wednesday.
Workers used tyres and wooden pallets to erect barricades at the facility in French Guiana.
The article goes on to say:
Workers used tyres and wooden pallets to erect barricades at the facility in French Guiana.
Satellite launch company Arianespace said in a statement that "due to a social movement, it was not possible to carry out today's [Monday's] scheduled transfer of the launch vehicle from the Spaceport's Final Assembly Building to the launch zone."
It said that the launch vehicle, as well as the satellites had been "placed in a stand-by mode and are being maintained in fully safe conditions".
And finally, it says:
It is not the first time industrial action has delayed a launch at the Kourou Space Centre.
In 2011, another Ariane 5 rocket launch had to be moved back when workers demanded extra pay for working on Sundays.
Further information can be found in Spaceflight Now's Launches from Kourou temporarily suspended by social unrest
Question: Are these the only two example of launches to space that have been substantially delayed by protests physically present at the launch site? If not, what are the other cases - how often does such a thing happen?
Background on the most recent protest:
above: "A barricade outside the Guiana Space Center. Credit: France Guyane" From here.
above: "An Ariane 5 rocket sits on the launch pad at the Kourou Space Center in French Guiana", from here.
above: French Guiana, north-east coast, South America. from here, credit: Ouest-France.