Some bicycle riders are indeed very bad people. They think they have the right-of-way in every scenario and will run red lights and act like the car drivers are the assholes when they almost get hit by cross-traffic that has the green. Drivers usually only notice the asshole bicyclists.
But in some cases, drivers need to get over the fact that bicyclists exist and understand that sometimes the actions of a bicyclists, while inconvenient for the driver, are the safest. For example, bicyclists do not belong on sidewalks. In areas with a lot of pedestrians (like downtown city blocks), a bicyclist is going to be incredibly limited in their speed on the sidewalk. In suburbs, a bicyclist on the sidewalk is less likely to be seen by a driver and is more likely to get hit by a car making a turn, especially if there are cars parked on the curb. In some states, it's actually illegal for bicyclists to ride on the sidewalk.
When they ride in the middle of the lane, it's not to be a dick. It's because there are dick drivers that will pass them and give them only a couple inches of space, which is dangerous. By riding in the middle, when a driver passes, it gives them a lot of room to move to the right if they feel the driver isn't giving them adequate space.
I think even to describe them as "very bad people" is quite the stretch. They may be a little bit obnoxious but running a red light as a car vs running a red light as a cyclist is completely and utterly different. Firstly the implications of running a red as a bicycle are typically just that other road users tut, it's very rare that anybody gets hurt, and if they do nobody dies except maybe the cyclist. Secondly it's that the entire traffic light system makes perfect sense for cars and other motorised transport, but only makes some sense for bicycles some of the time. There are a huge number of crossings where you go "it makes perfect sense for cars to stop here, but I as a cyclist basically only have to stop here to not upset drivers". IMO to reject and protest against the utter domination of our cities and public spaces by cars necessarily involves skipping traffic light systems that only make sense for cars. But doing it safely and with respect for pedestrians and other road users.
Some bicycle riders are indeed very bad people. They think they have the right-of-way in every scenario and will run red lights and act like the car drivers are the assholes when they almost get hit by cross-traffic that has the green. Drivers usually only notice the asshole bicyclists.
But in some cases, drivers need to get over the fact that bicyclists exist and understand that sometimes the actions of a bicyclists, while inconvenient for the driver, are the safest. For example, bicyclists do not belong on sidewalks. In areas with a lot of pedestrians (like downtown city blocks), a bicyclist is going to be incredibly limited in their speed on the sidewalk. In suburbs, a bicyclist on the sidewalk is less likely to be seen by a driver and is more likely to get hit by a car making a turn, especially if there are cars parked on the curb. In some states, it's actually illegal for bicyclists to ride on the sidewalk.
When they ride in the middle of the lane, it's not to be a dick. It's because there are dick drivers that will pass them and give them only a couple inches of space, which is dangerous. By riding in the middle, when a driver passes, it gives them a lot of room to move to the right if they feel the driver isn't giving them adequate space.