So I plan to kill imperials as I see them. The two travelers going to the wedding are accompanied by a bodyguard dresed in imperial gear and I strike him down. I leave the two travelers alone but they start running towards windhelm and I think nothing of it other than the 40 bounty added to Eastmarch.
I'm actually on my way to
Spoiler
and I get there and the commander (essential guy) charges me and knowing hes essential and the other soliers may be coming too I run. After I get away I check my stats on bounty and I see - meeting up with stormcloaks to get the jagged crown
40 bounty in Whitrun
40 bounty in Eastmarch
1080 total bounty
Also my first murder (the bodyguard) is in there too. I haven't returned to Windhelm but I've heard 1000 bounty is kill on sight. Am I banned from going back into Windhelm with 100 bounty? If I can't continue on the Civil War questline, that's fine. I would just treat it as a cool twist to my intial plans and continue onto other stuff. If that is the case , I was thinking how cool it was that I made a mistake and it afffects me badly.