Put guards in front of every concert hall and there will always be a line of people to be checked by the guards and this line will be the target, not to speak of killing the guards themselves.
1	Put	put	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	0:root	_
2	guards	guard	NOUN	NNS	Number=Plur	1	obj	1:obj	_
3	in	in	ADP	IN	_	4	case	4:case	_
4	front	front	NOUN	NN	Number=Sing	1	obl	1:obl:in	_
5	of	of	ADP	IN	_	8	case	8:case	_
6	every	every	DET	DT	_	8	det	8:det	_
7	concert	concert	NOUN	NN	Number=Sing	8	compound	8:compound	_
8	hall	hall	NOUN	NN	Number=Sing	4	nmod	4:nmod:of	_
9	and	and	CCONJ	CC	_	13	cc	13:cc	_
10	there	there	PRON	EX	_	13	expl	13:expl	_
11	will	will	AUX	MD	VerbForm=Fin	13	aux	13:aux	_
12	always	always	ADV	RB	_	13	advmod	13:advmod	_
13	be	be	VERB	VB	VerbForm=Inf	1	conj	1:conj:and	_
14	a	a	DET	DT	Definite=Ind|PronType=Art	15	det	15:det	_
15	line	line	NOUN	NN	Number=Sing	13	nsubj	13:nsubj	_
16	of	of	ADP	IN	_	17	case	17:case	_
17	people	people	NOUN	NNS	Number=Plur	15	nmod	15:nmod:of	_
18	to	to	PART	TO	_	20	mark	20:mark	_
19	be	be	AUX	VB	VerbForm=Inf	20	aux:pass	20:aux:pass	_
20	checked	check	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	15	acl	15:acl:to	_
21	by	by	ADP	IN	_	23	case	23:case	_
22	the	the	DET	DT	Definite=Def|PronType=Art	23	det	23:det	_
23	guards	guard	NOUN	NNS	Number=Plur	20	obl	20:obl:by	_
24	and	and	CCONJ	CC	_	30	cc	30:cc	_
25	this	this	DET	DT	Number=Sing|PronType=Dem	26	det	26:det	_
26	line	line	NOUN	NN	Number=Sing	30	nsubj	30:nsubj	_
27	will	will	AUX	MD	VerbForm=Fin	30	aux	30:aux	_
28	be	be	AUX	VB	VerbForm=Inf	30	cop	30:cop	_
29	the	the	DET	DT	Definite=Def|PronType=Art	30	det	30:det	_
30	target	target	NOUN	NN	Number=Sing	13	conj	13:conj:and	SpaceAfter=No
31	,	,	PUNCT	,	_	30	punct	30:punct	_
32	not	not	PART	RB	_	34	advmod	34:advmod	_
33	to	to	PART	TO	_	34	mark	34:mark	_
34	speak	speak	VERB	VB	VerbForm=Inf	30	parataxis	30:parataxis	_
35	of	of	SCONJ	IN	_	36	mark	36:mark	_
36	killing	kill	VERB	VBG	VerbForm=Ger	34	advcl	34:advcl:of	_
37	the	the	DET	DT	Definite=Def|PronType=Art	38	det	38:det	_
38	guards	guard	NOUN	NNS	Number=Plur	36	obj	36:obj	_
39	themselves	themselves	PRON	PRP	Case=Acc|Number=Plur|Person=3|PronType=Emp|Reflex=Yes	38	nmod:npmod	38:nmod:npmod	SpaceAfter=No
40	.	.	PUNCT	.	_	1	punct	1:punct	_
