I'm libertarian, but this is a bit of authoritarianism I can get behind.
Shutting down highways is not only illegal, but insanely dangerous. Remember Bridgegate? We east-coasters do. Someone DIED on that bridge when it was shut down. Someone who had a life, a family, I don't know, maybe people depended on them. But no, Christie had to shut down the bridge because "I don't have what I want!!!111!!1!1!11"
I don't care who you are or what your cause is. Blocking highways blocks not only traffic, but commerce, emergency services and the general livelihoods of affected peoples who NEED to get to where they need to go. Otherwise, they'll lose their time, their jobs, their money, their LIVES (LITERALLY). People will go unemployed, not get vital things that they ordered, or who knows? Maybe someone's house will burn down, because my feelings are more important than your loving house.
Under absolutely NO circumstances are you justified in enacting this type of protest, at all. Ever. Capiche? Now enact the law.