Exactly this. I'm sick to death of some, (not all, but some) dog owners being so inconsiderate and thoughtless. Thinking that everybody else should be interested in their dogs, and love their dogs, and not be pissed off that they run up to them and jump up them, when they're stupid enough to let them off their lead ... Some dogs start jumping up people, and barking at them, and running around them, and the owners don't give a shit!
I went on a walk on a country path a few weeks ago, and this couple had their dog off the lead. (German Shepherd cross.) I was about 30 to 50 feet ahead of this couple, and this dog just kept running up to me, and running around me and just stopping me from walking. It was happening for about 10 minutes and it was really, really pissing me off. These owners did absolutely nothing about it. Just ignored me totally, and the fact their mutt was basically tripping me up half the time!
This particular dog wasn't super threatening - though it did keep barking. But it was just irritating - like an annoying toddler. In the end. I just waited for them to walk past and waited 10 minutes for them to go further up the path with their dog. And then within about 15 minutes I caught up with them again - and had the dog running around me again. Put your dog on a lead FFS!
I simply couldn't do my walk properly as he kept running around me and stopping me, and almost tripped me... quite a few times too!
I'm also sick to death of people with big aggressive/aggressive looking dogs thinking it's absolutely fucking hilarious that people are scared of their dog. And they also laugh and mock when people pick up their small dogs because they're scared the big dogs are going to attack them or their dog. They mock and deride people, and say they are 'crazy.'
(There's a couple of people like that on this thread to be honest - thinking it's totes hilaire that people are scared, and bothered by peoples dogs off their lead.)
Saying shit like 'oh he is just a big old softy. He won't hurt you!' and laughing and mocking people who are afraid - (or just don't want the bastard thing running up to them and around them,) is utterly unacceptable. I'm telling you now you do not have full control of that dog, so don't even pretend you do have it. I used to like dogs when I was a lot younger, (we used to have dogs when I was a child,) but some dog owners have become so poor now, with absolutely no thought or consideration for anyone else but themselves, that it's put me right off dogs.
Even the other week when I was in a woodland out for a walk, there was a woman walking around with 3 dogs. ALL LOOSE. Despite multiple signs saying 'keep dogs on a LEAD!' They were running rings around me and barking at me. I was actually quite shaken as they were quite aggressive. She came out with the stupid predictable line... 'oooh they won't hurt you!' How do you fucking know you stupid bint? 
Within a few minutes of them spending 2 or 3 minutes running around me barking, I quickly left the woodland and went back to my car, as I was so pissed off and actually quite afraid to carry on walking in there with these 3 dogs loose. If they had all piled on me and started attacking me, she wouldn't have been able to do a THING about it.
Did she care? Did she hell!