This is the building that they gave advanced warning for incoming bombs right?
The IRA used to do the same thing.
The thing is that we have to take Israel/Palestine with the context of what's going on - the inciting incident seems to be the planned eviction of Palestinians from a suburb in East Jerusalem and their replacement with Israelis. It has escalated massively from there. However, the things which Hamas currently want are as follows:
A cessation to the evictions
The ability to worship at a particular mosque
The freeing of a bunch of Palestinians from a prison
And that's it. This isn't even about the blockade - it's about someone's house being taken from them.
Can you see how it might be difficult to side with Israel on this particular bit of the conflict?