The IDF posted this video showing how a single Gazan youth was able to open a hole in the fence to Israel, as one of his buddies easily slipped through for a moment.
This is the context that is missing in all the reporting on the riots that started last Friday.
While I would like the IDF to explain its open fire policy in more detail, because it is not doing a good job on that, clearly the threat of masses of people being able to simply walk into Israel is far greater than the media is reporting.
No sovereign nation would allow that, and every nation would defend its border with deadly force if it was invaded in that fashion.