I guess I'll just have to stab someone

It's clear someone keeps going onto my property because this is several times now my gates have been disturbed. The rear gate leading to the alley behind my house has been opened twice. That is not an easy gate to open due to the latch being rather difficult to lift up. The side gate leading to my backyard has also been opened. To test my theory I put a cinder block up against the side gate and it was out of place today.

Somebody is where they shouldn't be and they better hope I do not catch them.