Is it normal for a 15 months to throw tantrum like shouting , crying and screaming ? Especially now he starts to walk independently .. wanna walk to dangerous places so I gotta carry him away but in the end scream and cry so badly ..

yes it's normal as they are at age of expressing but not in words. They would usually want to be a little more independent and do what they want. Yet they don't know the dangers of it. One way in dealing with this is being firm. talk at a eye level with them. Explain to them even though they may not seem to understand it. Slowly but surely they will understand