Is there a way to group different taxonomy/content type in a single Select List (in a View)? I have different content types, each content type has its own taxonomy terms - see screenshot. 


International News
|--- Diplomacy
|--- War
-National News
|--- Economy
|--- Politics
-Entertainment
|--- Movies
|--- Theater
-Sports
|--- Football
|--- BasketBall  


I built a view that, by default, lists all the content from the different content types/taxonomy terms and i wanted to add a select list that will allow the visitor to filter through content and get the nodes they're interested in (Football for example)  

As you can see in the screenshot i have a filtering select lists block with a select list for each Content Type.
Is it possible to have a single select list that groups all the content types and their taxonomy terms ?

If that's not possible. How can i reset the filters each time a filtering occurs.
Right now, if i select Politics for example, the filtering is done and in the results we only get nodes that are tagged with that term which is exactely what it's supposed to do but on the resulting page, the filters do not reset themselves
If i select another taxonomy term, the first term i chose (Politics) stays on so unless there are nodes that are tagged with both terms, no nodes appear in the results page.

Any help is welcome

Thanks
You can follow this using below step:


Go to Administration -> Structure -> Views
Edit your existing view or create new new. 
Add Filter for taxonomy terms you need
Click on "Rearrange" filter icon in Filter section
Click on "Create new filter group" and move filter taxonomy terms you need in new filter group. 
Select Operator as "Or" in new filter group and save the form.